SNLS432C October   2012  – December 2015 DS125MB203

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description continued
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Electrical Characteristics - Serial Management Bus Interface
    7. 7.7 Timing Requirements - Serial Bus Interface
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 4-Level Input Configuration Guidelines
    4. 8.4 Device Functional Modes
      1. 8.4.1 Pin Control Mode
      2. 8.4.2 SMBUS Mode
    5. 8.5 Programming
      1. 8.5.1 SMBUS Master Mode
    6. 8.6 Register Maps
      1. 8.6.1 System Management Bus (SMBus) and Configuration Registers
        1. 8.6.1.1 Transfer Of Data Through the SMBus
        2. 8.6.1.2 SMBus Transactions
        3. 8.6.1.3 Writing a Register
        4. 8.6.1.4 Reading a Register
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 General Recommendations
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Bypassing
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8 Detailed Description

8.1 Overview

The DS125MB203 is a dual lane 2:1 multiplexer and 1:2 switch or fan-out buffer with signal conditioning. The DS125MB203 compensates for lossy FR-4 printed-circuit-board backplanes and balanced cables. The DS125MB203 operates in 3 modes: Pin Control Mode (ENSMB = 0), SMBus Slave Mode (ENSMB = 1) and SMBus Master Mode (ENSMB = float) to load register information from external EEPROM; refer to SMBUS Master Mode for additional information.

8.2 Functional Block Diagram

DS125MB203 mb203_functional_block_diagram.gif

8.3 Feature Description

8.3.1 4-Level Input Configuration Guidelines

The 4-level input pins use a resistor divider to help set the four valid control levels and provide a wider range of control settings when ENSMB = 0. There is an internal 30-kΩ pullup and a 60-kΩ pulldown connected to the package pin. These resistors, together with the external resistor connection, combine to achieve the desired voltage level. By using the 1-kΩ pulldown, 20-kΩ pulldown, no connect, and 1-kΩ pullup, the optimal voltage levels for each of the four input states are achieved as shown in Table 1.

Table 1. 4–Level Control Pin Settings

LEVEL SETTING RESULTING PIN VOLTAGE
3.3-V MODE 2.5-V MODE
0 Tie 1 kΩ to GND 0.1 V 0.08 V
R Tie 20 kΩ to GND 1/3 × VIN 1/3 × VDD
F Float (leave pin open) 2/3 × VIN 2/3 × VDD
1 Tie 1 kΩ to VIN or VDD VIN – 0.05 V VDD – 0.04 V

The typical 4-Level Input thresholds are as follows:

  • Internal Threshold between 0 and R = 0.2 × VIN or VDD
  • Internal Threshold between R and F = 0.5 × VIN or VDD
  • Internal Threshold between F and 1 = 0.8 × VIN or VDD

To minimize the start-up current associated with the integrated 2.5-V regulator, the 1-kΩ pullup and pulldown resistors are recommended. If several four level inputs require the same setting, it is possible to combine two or more 1-kΩ resistors into a single lower value resistor. As an example, combining two inputs with a single 500-Ω resistor is a valid way to save board space.

8.4 Device Functional Modes

8.4.1 Pin Control Mode

When in pin mode (ENSMB = 0) , the repeater is configurable with external pins. Equalization and de-emphasis can be selected through pin for each side independently. When de-emphasis is asserted VOD is automatically adjusted per Table 3. The receiver electrical idle detect threshold is also adjustable through the SD_TH pin.

8.4.2 SMBUS Mode

When in SMBus mode (ENSMB = 1), the VOD (output amplitude), equalization, de-emphasis, and termination disable features are all programmable on a individual lane basis, instead of grouped by A or B as in the pin mode case. Upon assertion of ENSMB the MODE, EQx and DEMx functions revert to register control immediately. The EQx and DEMx pins are converted to AD0-AD3 SMBus address inputs. The other external control pins remain active unless their respective registers are written to and the appropriate override bit is set, in which case they are ignored until ENSMB is driven low (pin mode). On power up and when ENSMB is driven low all registers are reset to their default state. If RESET is asserted while ENSMB is high, the registers retain their current state.

Equalization settings accessible through the pin controls were chosen to meet the needs of most applications. If additional fine tuning or adjustment is needed, additional equalization settings can be accessed through the SMBus registers. Each input has a total of 256 possible equalization settings. The tables show the 16 setting when the device is in pin mode. When using SMBus mode, the equalization, VOD and de-emphasis levels are set by registers.

The input control pins have been enhanced to have 4 different levels and provide a wider range of control settings when ENSMB=0.

Table 2. Equalizer Settings

LEVEL EQ_D1
EQ_S1		 EQ_D0
EQ_S0		 EQ – 8 BITS [7:0] dB AT
1.5 GHz		 dB AT
2.5 GHz		 dB AT
4 GHz		 dB AT
6 GHz		 SUGGESTED USE(1)
1 0 0 0000 0000 = 0x00 2.5 3.5 3.8 3.1 FR4 < 5 inch trace
2 0 R 0000 0001 = 0x01 3.8 5.4 6.7 6.7 FR4 5 inch 5–mil trace
3 0 Float 0000 0010 = 0x02 5.0 7.0 8.4 8.4 FR4 5 inch 4–mil trace
4 0 1 0000 0011 = 0x03 5.9 8.0 9.3 9.1 FR4 10 inch 5–mil trace
5 R 0 0000 0111 = 0x07 7.4 10.3 12.8 13.7 FR4 10 inch 4–mil trace
6 R R 0001 0101 = 0x15 6.9 10.2 13.9 16.2 FR4 15 inch 4–mil trace
7 R Float 0000 1011 = 0x0B 9.0 12.4 15.3 15.9 FR4 20 inch 4–mil trace
8 R 1 0000 1111 = 0x0F 10.2 13.8 16.7 17.0 FR4 25 to 30 inch 4–mil trace
9 Float 0 0101 0101 = 0x55 8.5 12.6 17.5 20.7 FR4 30 inch 4–mil trace
10 Float R 0001 1111 = 0x1F 11.7 16.2 20.3 21.8 FR4 35-inch 4–mil trace
11 Float Float 0010 1111 = 0x2F 13.2 18.3 22.8 23.6 10-m, 30-awg cable
12 Float 1 0011 1111 = 0x3F 14.4 19.8 24.2 24.7 10-m – 12-m cable
13 1 0 1010 1010 = 0xAA 14.4 20.5 26.4 28.0
14 1 R 0111 1111 = 0x7F 16.0 22.2 27.8 29.2
15 1 Float 1011 1111 = 0xBF 17.6 24.4 30.2 30.9
16 1 1 1111 1111 = 0xFF 18.7 25.8 31.6 31.9
(1) FR4 lengths are for reference only. FR4 lengths based on a 100-Ω differential stripline with 5-mil traces and 8-mil trace separation.

Table 3. De-Emphasis and Output Voltage Settings

LEVEL DEM_D1
DEM_S1		 DEM_D0
DEM_S0		 VOD Vp-p DEM dB INNER AMPLITUDE Vp-p SUGGESTED USE(1)
1 0 0 0.6 0 0.6 FR4 <5 inch 4–mil trace
2 0 R 0.8 0 0.8 FR4 <5 inch 4–mil trace
3 0 Float 0.8 - 3.5 0.55 FR4 10 inch 4–mil trace
4 0 1 0.9 0 1.0 FR4 <5 inch 4–mil trace
5 R 0 0.9 - 3.5 0.45 FR4 10 inch 4–mil trace
6 R R 0.9 - 6 0.5 FR4 15 inch 4–mil trace
7 R Float 1.0 0 1.0 FR4 <5 inch 4–mil trace
8 R 1 1.0 - 3.5 0.7 FR4 10 inch 4–mil trace
9 Float 0 1.0 - 6 0.5 FR4 15 inch 4–mil trace
10 Float R 1.1 0 1.1 FR4 <5 inch 4–mil trace
11 Float Float 1.1 - 3.5 0.7 FR4 10 inch 4–mil trace
12 Float 1 1.1 - 6 0.55 FR4 15 inch 4–mil trace
13 1 0 1.2 0 1.2 FR4 <5 inch 4–mil trace
14 1 R 1.2 - 3.5 0.8 FR4 10 inch 4–mil trace
15 1 Float 1.2 - 6 0.6 FR4 15 inch 4–mil trace
16 1 1 1.2 - 9 0.45 FR4 20 inch 4–mil trace
(1) The VOD output amplitude and DEM de-emphasis levels are set with the DEMD/S[1:0] pins.

Table 4. Input Termination Condition With RESET, INPUT_EN and SEL0 / SEL1

RESET INPUT_EN SEL0
SEL1		 MODE INPUT_TERM
S_INA0, S_INA1		 INPUT_TERM
S_INB0, S_INB1		 INPUT_TERM
D_IN0, D_IN1
1 X X Low Power High Z High Z High Z
0 0 X Manual Mux Mode 50 Ω 50 Ω 50 Ω
0 R X Reserved Reserved Reserved Reserved
0 F 0 Auto - continuous poll, DIN_B High Z Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω
0 F R Auto - continuous poll, DIN_B High Z Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω
0 F F Auto - continuous poll, DIN_A Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω High Z Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω
0 F 1 Auto - continuous poll, DIN_A Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω High Z Auto RX-Detect, output tests every 12 msec until detection occurs, input termination is high-z until detection; once detected input termination is 50 Ω
0 1 X Manual Fanout Mode 50 Ω 50 Ω 50 Ω

Table 5. Mux/Switch and FANOUT Control

SEL0 SEL1 INPUT_EN DESCRIPTION OF CONNECTION PATH
0 0 0 D_OUT0 connects to S_INB0.
D_OUT1 connects to S_INB1.
D_IN0 connects to S_OUTB0. S_OUTA0 is in IDLE (output muted).
D_IN1 connects to S_OUTB1. S_OUTA1 is in IDLE (output muted).
0 0 R Reserved
0 0 F D_OUT0 connects to S_INB0.
D_OUT1 connects to S_INB1.
D_IN0 connects to S_OUTB0. S_OUTA0 is in IDLE (output muted).
D_IN1 connects to S_OUTB1. S_OUTA1 is in IDLE (output muted).
0 0 1 D_OUT0 connects to S_INB0.
D_OUT1 connects to S_INB1.
D_IN0 connects to S_OUTB0 and S_OUTA0.
D_IN1 connects to S_OUTB1 and S_OUTA1.
R R 0 D_OUT0 connects to S_INB0.
D_OUT1 connects to S_INB1.
D_IN0 connects to S_OUTA0. S_OUTB0 is in IDLE (output muted).
D_IN1 connects to S_OUTA1. S_OUTB1 is in IDLE (output muted).
R R R Reserved
R R F D_OUT0 connects to S_INB0.
D_OUT1 connects to S_INB1.
D_IN0 connects to S_OUTA0. S_OUTB0 is in IDLE (output muted).
D_IN1 connects to S_OUTA1. S_OUTB1 is in IDLE (output muted).
R R 1 D_OUT0 connects to S_INB0.
D_OUT1 connects to S_INB1.
D_IN0 connects to S_OUTB0 and S_OUTA0.
D_IN1 connects to S_OUTB1 and S_OUTA1.
F F 0 D_OUT0 connects to S_INA0.
D_OUT1 connects to S_INA1.
D_IN0 connects to S_OUTB0. S_OUTA0 is in IDLE (output muted).
D_IN1 connects to S_OUTB1. S_OUTA1 is in IDLE (output muted).
F F R Reserved
F F F D_OUT0 connects to S_INA0.
D_OUT1 connects to S_INA1.
D_IN0 connects to S_OUTB0. S_OUTA0 is in IDLE (output muted).
D_IN1 connects to S_OUTB1. S_OUTA1 is in IDLE (output muted).
F F 1 D_OUT0 connects to S_INA0.
D_OUT1 connects to S_INA1.
D_IN0 connects to S_OUTB0 and S_OUTA0.
D_IN1 connects to S_OUTB1 and S_OUTA1.
1 1 0 D_OUT0 connects to S_INA0.
D_OUT1 connects to S_INA1.
D_IN0 connects to S_OUTA0. S_OUTB0 is in IDLE (output muted).
D_IN1 connects to S_OUTA1. S_OUTB1 is in IDLE (output muted).
1 1 R Reserved
1 1 F D_OUT0 connects to S_INA0.
D_OUT1 connects to S_INA1.
D_IN0 connects to S_OUTA0. S_OUTB0 is in IDLE (output muted).
D_IN1 connects to S_OUTA1. S_OUTB1 is in IDLE (output muted).
1 1 1 D_OUT0 connects to S_INA0.
D_OUT1 connects to S_INA1.
D_IN0 connects to S_OUTA0 and S_OUTB0.
D_IN1 connects to S_OUTA1 and S_OUTB1.

8.5 Programming

8.5.1 SMBUS Master Mode

The DS125MB203 devices support reading directly from an external EEPROM device by implementing SMBus master mode. When using the SMBus master mode, the DS125MB203 will read directly from specific location in the external EEPROM. When designing a system for using the external EEPROM, the user needs to follow these specific guidelines below.

NOTE

SEL0, SEL1 and INPUT_EN control are to be set with the external strap pins because there are no register bits to configure them.
  • Set ENSMB = Float — enable the SMBUS master mode.
  • The external EEPROM device address byte must be 0xA0'h and capable of 1-MHz operation at 2.5-V and 3.3-V supply. The maximum allowed size is 8 kbits (1024 bytes).
  • Set the AD[3:0] inputs for SMBus address byte. When the AD[3:0] = 0000'b, the device address byte is B0'h.

When tying multiple DS125MB203 devices to the SDA and SCL bus, use these guidelines to configure the devices.

  • Use SMBus AD[3:0] address bits so that each device can loaded its configuration from the EEPROM. Example below is for 4 device.
    U1: AD[3:0] = 0000 = 0xB0'h,
    U2: AD[3:0] = 0001 = 0xB2'h,
    U3: AD[3:0] = 0010 = 0xB4'h,
    U4: AD[3:0] = 0011 = 0xB6'h
  • Use a pullup resistor on SDA and SCL; value = 2 kΩ
  • Daisy-chain READEN# (pin 26) and ALL_DONE# (pin 27) from one device to the next device in the sequence so that they do not compete for the EEPROM at the same time.
    1. Tie READEN# of the 1st device in the chain (U1) to GND
    2. Tie ALL_DONE# of U1 to READEN# of U2
    3. Tie ALL_DONE# of U2 to READEN# of U3
    4. Tie ALL_DONE# of U3 to READEN# of U4
    5. Optional: Tie ALL_DONE# output of U4 to a LED to show the devices have been loaded successfully

Below is an example of a 2 kbits (256 × 8-bit) EEPROM in hex format for the DS125MB203 device. The first 3 bytes of the EEPROM always contain a header common and necessary to control initialization of all devices connected to the I2C bus. CRC enable flag to enable/disable CRC checking. If CRC checking is disabled, a fixed pattern (8’hA5) is written/read instead of the CRC byte from the CRC location, to simplify the control. There is a MAP bit to flag the presence of an address map that specifies the configuration data start in the EEPROM. If the MAP bit is not present the configuration data start address is derived from the DS125MB203 address and the configuration data size. A bit to indicate an EEPROM size > 256 bytes is necessary to properly address the EEPROM. There are 37 bytes of data size for each DS125MB203 device.

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

NOTE

The maximum EEPROM size supported is 8 kbits (1024 × 8 bits). For more information in regards to EEPROM programming and the hex format, see SNLA228.

8.6 Register Maps

8.6.1 System Management Bus (SMBus) and Configuration Registers

The System Management Bus interface is compatible to SMBus 2.0 physical layer specification. ENSMB = 1 kΩ to VDD to enable SMBus slave mode and allow access to the configuration registers.

The DS125MB203 has the AD[3:0] inputs in SMBus mode. These pins are the user set SMBUS slave address inputs. The AD[3:0] pins have internal pull-down. When left floating or pulled low the AD[3:0] = 0000'b, the device default address byte is B0'h. Based on the SMBus 2.0 specification, the DS125MB203 has a 7-bit slave address. The LSB is set to 0'b (for a WRITE). The device supports up to 16 address byte, which can be set with the AD[3:0] inputs. Below are the 16 addresses.

Table 6. Device Slave Address Bytes

AD[3:0] SETTINGS ADDRESS BYTES (HEX)
0000 B0
0001 B2
0010 B4
0011 B6
0100 B8
0101 BA
0110 BC
0111 BE
1000 C0
1001 C2
1010 C4
1011 C6
1100 C8
1101 CA
1110 CC
1111 CE

The SDA, SCL pins are 3.3V tolerant, but are not 5V tolerant. External pull-up resistor is required on the SDA. The resistor value can be from 1 kΩ to 5 kΩ depending on the voltage, loading and speed. The SCL may also require an external pull-up resistor and it depends on the Host that drives the bus.

8.6.1.1 Transfer Of Data Through the SMBus

During normal operation the data on SDA must be stable during the time when SCL is High.

There are three unique states for the SMBus:

  • START: A High-to-Low transition on SDA while SCL is High indicates a message START condition.
  • STOP: A Low-to-High transition on SDA while SCL is High indicates a message STOP condition.
  • IDLE: If SCL and SDA are both High for a time exceeding tBUF from the last detected STOP condition or if they are High for a total exceeding the maximum specification for tHIGH then the bus will transfer to the IDLE state.

8.6.1.2 SMBus Transactions

The device supports WRITE and READ transactions. See Table 8 for register address, type (Read/Write, Read Only), default value and function information.

8.6.1.3 Writing a Register

To write a register, the following protocol is used (see SMBus 2.0 specification).

  1. The Host drives a START condition, the 7-bit SMBus address, and a 0 indicating a WRITE.
  2. The Device (Slave) drives the ACK bit (0).
  3. The Host drives the 8-bit Register Address.
  4. The Device drives an ACK bit (0).
  5. The Host drive the 8-bit data byte.
  6. The Device drives an ACK bit (0).
  7. The Host drives a STOP condition.

The WRITE transaction is completed, the bus goes IDLE and communication with other SMBus devices may now occur.

8.6.1.4 Reading a Register

To read a register, the following protocol is used (see SMBus 2.0 specification).

  1. The Host drives a START condition, the 7-bit SMBus address, and a 0 indicating a WRITE.
  2. The Device (Slave) drives the ACK bit (0).
  3. The Host drives the 8-bit Register Address.
  4. The Device drives an ACK bit (0).
  5. The Host drives a START condition.
  6. The Host drives the 7-bit SMBus Address, and a 1 indicating a READ.
  7. The Device drives an ACK bit 0.
  8. The Device drives the 8-bit data value (register contents).
  9. The Host drives a NACK bit 1indicating end of the READ transfer.
  10. The Host drives a STOP condition.

The READ transaction is completed, the bus goes IDLE and communication with other SMBus devices may now occur.

See Table 7 for more information.

Table 7. SMBUS Slave Mode Register Map

ADDRESS REGISTER
NAME		 BIT FIELD TYPE DEFAULT EEPROM
REG BIT		 DESCRIPTION
0x00 Observation 7 Reserved R/W 0x00 Set bit to 0
6:3 Address Bit
AD[3:0]		 R Observation of AD[3:0] bits
[6]: AD3
[5]: AD2
[4]: AD1
[3]: AD0
2 EEPROM Read Done R 1 = Device completed the read from external EEPROM
1 Block Reset R/W 1: Block bit 0 from resetting the registers; self clearing.
0 Reset R/W SMBus Reset
1: Reset registers to default value; self clearing.
0x01 PWDN Channels 7:0 PWDN CHx R/W 0x00 Yes Power Down per Channel
[7]: CH7 (NC – S_OUTB1)
[6]: CH6 (D_IN1 – S_OUTA1)
[5]: CH5 (NC – S_OUTB0)
[4]: CH4 (D_IN0 – S_OUTA0)
[3]: CH3 (D_OUT1 – S_INB1)
[2]: CH2 (NC – S_INA1)
[1]: CH1 (D_OUT0 – S_INB0)
[0]: CH0 (NC – S_INA0)
0x00 = all channels enabled
0xFF = all channels disabled
Note: Override PWDN pin and enable register control through Reg 0x02[0]
0x02 Override RESET Control 7 Reserved R/W 0x00 Set bit to 0
6 Reserved Set bit to 0
5:2 Reserved Yes Set bits to 0
1 Reserved Set bit to 0
0 Override RESET Yes 1: Block RESET pin control; use Reg_01 to configure.
0: Allow RESET pin control.
0x03 Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x04 Reserved 7:0 Reserved R/W 0x00 Yes Set bits to 0
0x05 Reserved 7:0 Reserved R/W 0x00 Reserved
0x06 Slave Register Control 7:5 Reserved R/W 0x10 Set bits to 0
4 Reserved Yes Set bit to 1
3 Register Enable 1 = Enable SMBus slave mode register control
0 = Disable SMBus register control
Note: To change VOD, DEM, and EQ of the channels in slave mode, this bit must be set to 1.
2:0 Reserved Set bits to 0
0x07 Reserved 7:1 Reserved R/W 0x01 Set bits to 0
0 Reserved Set bit to 1
0x08 Override
Pin Control 		7 Reserved R/W 0x00 Set bit to 0
6:4 Reserved Yes Set bits to 0
3 Override RXDET Yes 1 = Block RXDET pin control (register control enabled)
0 = Allow RXDET pin control (register control disabled)
2 Override MODE Yes 1: Block MODE pin control; use register to configure.
0: Allow MODE pin control
1:0 Reserved Yes Set bits to 0
0x09 Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x0A Reserved 7:0 Reserved R 0x00
0x0B Reserved 7 Reserved R/W 0x70 Set bit to 0
6:0 Reserved R/W Yes Set bits to 111 0000'b
0x0C-0x0D Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x0E CH0
NC – S_INA0
RXDET		 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 RXDET Yes 00'b = Input is Hi-Z impedance
01'b = Auto Rx-Detect,
outputs test every 12 ms for 600 ms (50 times) then stops; termination is Hi-Z until detection; once detected input termination is 50 Ω
10'b = Auto Rx-Detect,
outputs test every 12 ms until detection occurs; termination is Hi-Z until detection; once detected input termination is 50 Ω
11'b = Input is 50 Ω
Note: Override RXDET pin and enable register control through Reg 0x08[3]
1:0 Reserved Set bits to 0
0x0F CH0
NC – S_INA0
EQ		 7:0 EQ Control R/W 0x2F Yes EQ Control - total of 256 levels.
See Table 2.
0x10 Reserved 7:0 Reserved R/W 0xAD Yes
0x11 CH0
NC – S_INA0
Reserved		 7:3 Reserved R/W 0x02 Set bits to 0
2:0 Reserved Yes
0x12 CH0
NC – S_INA0
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x13-0x14 Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x15 CH1
D_OUT0 – S_INB0
RXDET		 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 RXDET Yes 00'b = Input is Hi-Z impedance
01'b = Auto Rx-Detect,
outputs test every 12 ms for 600 ms (50 times) then stops; termination is Hi-Z until detection; once detected input termination is 50 Ω
10'b = Auto Rx-Detect,
outputs test every 12 ms until detection occurs; termination is Hi-Z until detection; once detected input termination is 50 Ω
11'b = Input is 50 Ω
Note: Override RXDET pin and enable register control through Reg 0x08[3]
1:0 Reserved Set bits to 0
0x16 CH1
D_OUT0 – S_INB0
EQ		 7:0 EQ Control R/W 0x2F Yes EQ control - total of 256 levels.
See Table 2.
0x17 CH1
D_OUT0 – S_INB0
VOD 		7 Short Circuit Protection R/W 0xAD Yes 1 = Enable the short circuit protection
0 = Disable the short circuit protection
6 MODE Control Yes 1 = PCIe GEN 1/2, 10GE
0 = PCIe GEN 3, 10G-KR
Note: override the MODE pin in Reg_08.
5:3 Reserved Yes Set bits to 101'b
2:0 VOD Control Yes VOD control:
000'b = 0.6 V
001'b = 0.7 V
010'b = 0.8 V
011'b = 0.9 V
100'b = 1.0 V
101'b = 1.1 (default)
110'b = 1.2
111'b = 1.3
0x18 CH1
D_OUT0 – S_INB0
DEM		 7 RXDET Status R 0x02 Observation bit for RXDET CH1
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
6:5 Reserved Set bits to 0
4:3 Reserved R/W Set bits to 0
2:0 DEM Control Yes DEM Control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
0x19 CH1
D_OUT0 – S_INB0
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x1A-0x1B Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x1C CH2
NC – S_INA1
RXDET		 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 RXDET Yes 00'b = Input is Hi-Z impedance
01'b = Auto Rx-Detect,
outputs test every 12 ms for 600 ms (50 times) then stops; termination is Hi-Z until detection; once detected input termination is 50 Ω
10'b = Auto Rx-Detect,
outputs test every 12 ms until detection occurs; termination is Hi-Z until detection; once detected input termination is 50 Ω
11'b = Input is 50 Ω
Note: Override RXDET pin and enable register control through Reg 0x08[3]
1:0 Reserved Set bits to 0
0x1D CH2
NC – S_INA1
EQ		 7:0 EQ Control R/W 0x2F Yes EQ control - total of 256 levels.
See Table 2.
0x1E Reserved 7:0 Reserved R/W 0xAD Yes
0x1F Reserved 7:3 Reserved R/W 0x02
2:0 Yes
0x20 CH2
NC – S_INA1
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x21-0x22 Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x23 CH3
D_OUT1 – S_INB1
RXDET		 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 RXDET Yes 00'b = Input is Hi-Z impedance
01'b = Auto Rx-Detect,
outputs test every 12 ms for 600 ms (50 times) then stops; termination is Hi-Z until detection; once detected input termination is 50 Ω
10'b = Auto Rx-Detect,
outputs test every 12 ms until detection occurs; termination is Hi-Z until detection; once detected input termination is 50 Ω
11'b = Input is 50 Ω
Note: Override RXDET pin and enable register control through Reg 0x08[3]
1:0 Reserved Set bits to 0
0x24 CH3
D_OUT1 – S_INB1
EQ		 7:0 EQ Control R/W 0x2F Yes EQ control - total of 256 levels.
See Table 2.
0x25 CH3
D_OUT1 – S_INB1
VOD 		7 Short Circuit Protection R/W 0xAD Yes 1 = Enable the short circuit protection
0 = Disable the short circuit protection
6 MODE Control Yes 1 = PCIe GEN 1/2, 10GE
0 = PCIe GEN 3, 10G-KR
Note: Override the MODE pin in Reg_08.
5:3 Reserved Yes Set bits to 101'b
2:0 VOD Control Yes VOD control:
000'b = 0.6 V
001'b = 0.7 V
010'b = 0.8 V
011'b = 0.9 V
100'b = 1.0 V
101'b = 1.1 (default)
110'b = 1.2
111'b = 1.3
0x26 CH3
D_OUT1 – S_INB1
DEM		 7 RXDET Status R 0x02 Observation bit for RXDET CH3 - CHB_3
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
6:5 Reserved Set bits to 0
4:3 Reserved R/W Set bits to 0
2:0 DEM Control Yes DEM Control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
0x27 CH3
D_OUT1 – S_INB1
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x28 Signal Detect Status Control 7 Reserved R/W 0x0C Set bit to 0
6 Reserved Yes Set bit to 0
5:4 High SD_TH Status Yes Enable higher range of signal detect status thresholds
[5]: CH0 - CH3
[4]: CH4 - CH7
3:2 Fast Signal Detect Status Yes Enable fast signal detect status
[3]: CH0 - CH3
[2]: CH4 - CH7
Note: In fast signal detect, assert/deassert response occurs after approximately 3-4 ns
1:0 Reduced SD Status Gain Yes Enable Reduced Signal Detect Status Gain
[1]: CH0 - CH3
[0]: CH4 - CH7
0x29-0x2A Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x2B CH4
D_IN0 – S_OUTA0
RXDET		 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 RXDET Yes 00'b = Input is Hi-Z impedance
01'b = Auto Rx-Detect,
outputs test every 12 ms for 600 ms (50 times) then stops; termination is Hi-Z until detection; once detected input termination is 50 Ω
10'b = Auto Rx-Detect,
outputs test every 12 ms until detection occurs; termination is Hi-Z until detection; once detected input termination is 50 Ω
11'b = Input is 50 Ω
Note: Override RXDET pin and enable register control through Reg 0x08[3]
1:0 Reserved Set bits to 0
0x2C CH4
D_IN0 – S_OUTA0
EQ		 7:0 EQ Control R/W 0x2F Yes EQ control - total of 256 levels.
See Table 2.
0x2D CH4
D_IN0 – S_OUTA0
VOD 		7 Short Circuit Protection R/W 0xAD Yes 1 = Enable the short circuit protection
0 = Disable the short circuit protection
6 MODE Control Yes 1 = PCIe GEN 1/2, 10GE
0 = PCIe GEN 3, 10G-KR
Note: override the MODE pin in Reg_08.
5:3 Reserved Yes Set bits to 101'b
2:0 VOD Control Yes VOD control:
000'b = 0.6 V
001'b = 0.7 V
010'b = 0.8 V
011'b = 0.9 V
100'b = 1.0 V
101'b = 1.1 (default)
110'b = 1.2
111'b = 1.3
0x2E CH4
D_IN0 – S_OUTA0
DEM		 7 RXDET Status R 0x02 Observation bit for RXDET CH4 - CHA_0
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
6:5 Reserved Set bits to 0
4:3 Reserved R/W Set bits to 0
2:0 DEM Control Yes DEM Control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
0x2F CH4
D_IN0 – S_OUTA0
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x30-0x31 Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x32 Reserved 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Set bits to 0
0x33 CH5
NC – S_OUTB0
Reserved		 7:0 Reserved R/W 0x2F Yes
0x34 CH5
NC – S_OUTB0
VOD 		7 Short Circuit Protection R/W 0xAD Yes 1 = Enable the short circuit protection
0 = Disable the short circuit protection
6 MODE Control Yes 1 = PCIe GEN 1/2, 10GE
0 = PCIe GEN 3, 10G-KR
Note: Override the MODE pin in Reg_08.
5:3 Reserved Yes Set bits to 101'b
2:0 VOD Control Yes VOD control:
000'b = 0.6 V
001'b = 0.7 V
010'b = 0.8 V
011'b = 0.9 V
100'b = 1.0 V
101'b = 1.1 (default)
110'b = 1.2
111'b = 1.3
0x35 CH5
NC – S_OUTB0
DEM		 7 RXDET Status R 0x02 Observation bit for RXDET CH5 - CHA1
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
6:5 Reserved Set bits to 0
4:3 Reserved R/W Set bits to 0
2:0 DEM Control Yes DEM control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
0x36 CH5
NC – S_OUTB0
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x37-0x38 Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x39 CH6
D_IN1 – S_OUTA1
RXDET		 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 RXDET Yes 00'b = Input is Hi-Z impedance
01'b = Auto Rx-Detect,
outputs test every 12 ms for 600 ms (50 times) then stops; termination is Hi-Z until detection; once detected input termination is 50 Ω
10'b = Auto Rx-Detect,
outputs test every 12 ms until detection occurs; termination is Hi-Z until detection; once detected input termination is 50 Ω
11'b = Input is 50 Ω
Note: Override RXDET pin and enable register control through Reg 0x08[3]
1:0 Reserved Set bits to 0
0x3A CH6
D_IN1 – S_OUTA1
EQ		 7:0 EQ Control R/W 0x2F Yes EQ Control - total of 256 levels.
See Table 2.
0x3B CH6
D_IN1 – S_OUTA1
VOD 		7 Short Circuit Protection R/W 0xAD Yes 1 = Enable the short circuit protection
0 = Disable the short circuit protection
6 MODE Control Yes 1 = PCIe GEN 1/2, 10GE
0 = PCIe GEN 3, 10G-KR
Note: Override the MODE pin in Reg_08.
5:3 Reserved Yes Set bits to 0101'b
2:0 VOD Control Yes VOD Control:
000'b = 0.6 V
001'b = 0.7 V
010'b = 0.8 V
011'b = 0.9 V
100'b = 1.0 V
101'b = 1.1 (default)
110'b = 1.2
111'b = 1.3
0x3C CH6
D_IN1 – S_OUTA1
DEM		 7 RXDET Status R 0x02 Observation bit for RXDET CH6 - CHA_2
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
6:5 Reserved Set bits to 0
4:3 Reserved R/W Set bits to 0
2:0 DEM Control Yes DEM control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
0x3D CH6
D_IN1 – S_OUTA1
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Yes Set bits to 0
0x3E-0x3F Reserved 7:0 Reserved R/W 0x00 Set bits to 0
0x40 Reserved 7:6 Reserved R/W 0x00 Set bits to 0
5:4 Reserved Yes Set bits to 0
3:2 Reserved Yes Set bits to 0
1:0 Reserved Set bits to 0
0x41 CH7
NC – S_OUTB1
EQ		 7:0 EQ Control R/W 0x2F Yes EQ control - total of 256 levels.
See Table 2.
0x42 CH7
NC – S_OUTB1
VOD 		7 Short Circuit Protection R/W 0xAD Yes 1 = Enable the short circuit protection
0 = Disable the short circuit protection
6 MODE Control Yes 1 = PCIe GEN 1/2, 10GE
0 = PCIe GEN 3, 10G-KR
Note: Override the MODE pin in Reg_08.
5:3 Reserved Yes Set bits to 101'b
2:0 VOD Control Yes VOD Control:
000'b = 0.6 V
001'b = 0.7 V
010'b = 0.8 V
011'b = 0.9 V
100'b = 1.0 V
101'b = 1.1 (default)
110'b = 1.2
111'b = 1.3
0x43 CH7
NC – S_OUTB1
DEM		 7 RXDET Status R 0x02 Observation bit for RXDET CH7 - CHA_3
1 = Input 50 Ω terminated to VDD
0 = Input is Hi-Z
6:5 Reserved Set bits to 0
4:3 Reserved R/W Set bits to 0
2:0 DEM Control Yes DEM Control
000'b = 0 dB
001'b = –1.5 dB
010'b = –3.5 dB (default)
011'b = –5 dB
100'b = –6 dB
101'b = –8 dB
110'b = –9 dB
111'b = –12 dB
0x44 CH7
NC – S_OUTB1
Reserved		 7 Reserved R/W 0x00 Yes Set bit to 0.
6:4 Reserved Set bits to 0.
3:2 Reserved Yes Set bits to 0.
1:0 Reserved Yes Set bits to 0.
0x45 Reserved 7:0 Reserved R/W 0x00 Set bits to 0.
0x46 Reserved 7:0 Reserved R/W 0x38 Set bits to 0x38
0x47 Reserved 7:4 Reserved R/W 0x00 Set bits to 0.
3:0 Reserved Yes Set bits to 0.
0x48 Reserved 7:6 Reserved R/W 0x05 Yes Set bits to 0.
5:0 Reserved R/W Set bits to 00 0101'b
0x49-0x4B Reserved 7:0 Reserved R/W 0x00 Set bits to 0.
0x4C Reserved 7:3 Reserved R/W 0x00 Yes Set bits to 0.
2:1 Reserved R/W Set bits to 0.
0 Reserved R/W Yes Set bits to 0.
0x4D-0x50 Reserved 7:0 Reserved R/W 0x00 Set bits to 0.
0x51 Device ID 7:5 VERSION R 0x46 010'b
4:0 ID 0 0110'b
0x52-0x55 Reserved 7:0 Reserved R/W 0x00 Set bits to 0.
0x56 Reserved 7:0 Reserved R/W 0x10 Set bits to 0x10
0x57 Reserved 7:0 Reserved R/W 0x64 Set bits to 0x64
0x58 Reserved 7:0 Reserved R/W 0x21 Set bits to 0x21
0x59 Reserved 7:1 Reserved R/W 0x00 Set bits to 0.
0 Reserved Yes Set bit to 0.
0x5A Reserved 7:0 Reserved R/W 0x54 Yes Set bits to 0x54
0x5B Reserved 7:0 Reserved R/W 0x54 Yes Set bits to 0x54
0x5C-0x5D Reserved 7:0 Reserved R/W 0x00 Set bits to 0.
0x5E Override SEL[1:0] and INPUT_EN 7:3 Reserved R/W 0x00 Set bits to 0.
2 Override SEL1 pin 1: Block SEL1 pin control; use Reg_5F to configure.
0: Allow SEL1 pin control
1 Override SEL0 pin 1: Block SEL0 pin control; use Reg_5F to configure.
0: Allow SEL0 pin control
0 Override INPUT_EN pin 1: Block INPUT_EN pin control; use Reg_5F to configure.
0: Allow INPUT_EN pin control
0x5F Control SEL[1:0] and INPUT_EN 7:6 SEL1 Control R/W 0x00 Select for lane 1.
00: 0 - Selects input S_INB1±, output S_OUTB1±.
01: 20kΩ to GND - Selects input S_INB1±, output S_OUTA1±
10: FLOAT - Selects input S_INA1±, output S_OUTB1±
11: 1 - Selects input S_INA1±, output S_OUTA1±.
5:4 SEL0 Control Select for lane 0.
00: 0 - Selects input S_INB0±, output S_OUTB0±.
01: 20 kΩ to GND - Selects input S_INB0±, output S_OUTA0±
10: FLOAT - Selects input S_INA0±, output S_OUTB0±
11: 1 - Selects input S_INA0±, output S_OUTA0±.
3:2 INPUT_EN Control 00: 0 - Normal Operation, FANOUT is disabled, use SEL0/1 to select the A or B input/output (see SEL0/1 pin), input always enabled with 50 Ohms.
01: 20 kΩ to GND - Reserved
10: FLOAT - AUTO - Use RX Detect, SEL0/1 to determine which input or output to enable, FANOUT is disable.
11: 1 - Normal Operation, FANOUT is enabled (both S_OUT0/1 are ON). Input always enabled with 50 Ohms.
1:0 Reserved 1: Block INPUT_EN pin control; use Reg_5F to configure.
0: Allow INPUT_EN pin control

Table 8. EEPROM Register Map With Default Value

EEPROM ADDRESS BYTE BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
Description 0x00 CRC_EN Address Map Present EEPROM > 256 Bytes Reserved DEVICE COUNT[3] DEVICE COUNT[2] DEVICE COUNT[1] DEVICE COUNT[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x01 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x02 Max EEPROM Burst size[7] Max EEPROM Burst size[6] Max EEPROM Burst size[5] Max EEPROM Burst size[4] Max EEPROM Burst size[3] Max EEPROM Burst size[2] Max EEPROM Burst size[1] Max EEPROM Burst size[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x03 PWDN_CH7 PWDN_CH6 PWDN_CH5 PWDN_CH4 PWDN_CH3 PWDN_CH2 PWDN_CH1 PWDN_CH0
SMBus Register 0x01[7] 0x01[6] 0x01[5] 0x01[4] 0x01[3] 0x01[2] 0x01[1] 0x01[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x04 Reserved Reserved Reserved Reserved Ovrd_RESET Reserved Reserved Reserved
SMBus Register 0x02[5] 0x02[4] 0x02[3] 0x02[2] 0x02[0] 0x04[7] 0x04[6] 0x04[5]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x05 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x04[4] 0x04[3] 0x04[2] 0x04[1] 0x04[0] 0x06[4] 0x08[6] 0x08[5]
Default Value 0x04 0 0 0 0 0 1 0 0
Description 0x06 Reserved Ovrd_RXDET Ovrd_MODE Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x08[4] 0x08[3] 0x08[2] 0x08[1] 0x08[0] 0x0B[6] 0x0B[5] 0x0B[4]
Default Value 0x07 0 0 0 0 0 1 1 1
Description 0x07 Reserved Reserved Reserved Reserved Reserved Reserved CH0_RXDET_1 CH0_RXDET_0
SMBus Register 0x0B[3] 0x0B[2] 0x0B[1] 0x0B[0] 0x0E[5] 0x0E[4] 0x0E[3] 0x0E[2]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x08 CH0_EQ_7 CH0_EQ_6 CH0_EQ_5 CH0_EQ_4 CH0_EQ_3 CH0_EQ_2 CH0_EQ_1 CH0_EQ_0
SMBus Register 0x0F[7] 0x0F[6] 0x0F[5] 0x0F[4] 0x0F[3] 0x0F[2] 0x0F[1] 0x0F[0]
Default Value 0x2F 0 0 1 0 1 1 1 1
Description 0x09 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x10[7] 0x10[6] 0x10[5] 0x10[4] 0x10[3] 0x10[2] 0x10[1] 0x10[0]
Default Value 0xAD 1 0 1 0 1 1 0 1
Description 0x0A Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x11[2] 0x11[1] 0x11[0] 0x12[7] 0x12[3] 0x12[2] 0x12[1] 0x12[0]
Default Value 0x40 0 1 0 0 0 0 0 0
Description 0x0B Reserved Reserved CH1_RXDET_1 CH1_RXDET_0 CH1_EQ_7 CH1_EQ_6 CH1_EQ_5 CH1_EQ_4
SMBus Register 0x15[5] 0x15[4] 0x15[3] 0x15[2] 0x16[7] 0x16[6] 0x16[5] 0x16[4]
Default Value 0x02 0 0 0 0 0 0 1 0
Description 0x0C CH1_EQ_3 CH1_EQ_2 CH1_EQ_1 CH1_EQ_0 CH1_SCP CH1_Sel_MODE Reserved Reserved
SMBus Register 0x16[3] 0x16[2] 0x16[1] 0x16[0] 0x17[7] 0x17[6] 0x17[5] 0x17[4]
Default Value 0xFA 1 1 1 1 1 0 1 0
Description 0x0D Reserved CH1_VOD_2 CH1_VOD_1 CH1_VOD_0 CH1_DEM_2 CH1_DEM_1 CH1_DEM_0 Reserved
SMBus Register 0x17[3] 0x17[2] 0x17[1] 0x17[0] 0x18[2] 0x18[1] 0x18[0] 0x19[7]
Default Value 0xD4 1 1 0 1 0 1 0 0
Description 0x0E Reserved Reserved Reserved Reserved Reserved Reserved CH2_RXDET_1 CH2_RXDET_0
SMBus Register 0x19[3] 0x19[2] 0x19[1] 0x19[0] 0x1C[5] 0x1C[4] 0x1C[3] 0x1C[2]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x0F CH2_EQ_7 CH2_EQ_6 CH2_EQ_5 CH2_EQ_4 CH2_EQ_3 CH2_EQ_2 CH2_EQ_1 CH2_EQ_0
SMBus Register 0x1D[7] 0x1D[6] 0x1D[5] 0x1D[4] 0x1D[3] 0x1D[2] 0x1D[1] 0x1D[0]
Default Value 0x2F 0 0 1 0 1 1 1 1
Description 0x10 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x1E[7] 0x1E[6] 0x1E[5] 0x1E[4] 0x1E[3] 0x1E[2] 0x1E[1] 0x1E[0]
Default Value 0xAD 1 0 1 0 1 1 0 1
Description 0x11 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x1F[2] 0x1F[1] 0x1F[0] 0x20[7] 0x20[3] 0x20[2] 0x20[1] 0x20[0]
Default Value 0x40 0 1 0 0 0 0 0 0
Description 0x12 Reserved Reserved CH3_RXDET_1 CH3_RXDET_0 CH3_EQ_7 CH3_EQ_6 CH3_EQ_5 CH3_EQ_4
SMBus Register 0x23[5] 0x23[4] 0x23[3] 0x23[2] 0x24[7] 0x24[6] 0x24[5] 0x24[4]
Default Value 0x02 0 0 0 0 0 0 1 0
Description 0x13 CH3_EQ_3 CH3_EQ_2 CH3_EQ_1 CH3_EQ_0 CH3_SCP CH3_Sel_MODE Reserved Reserved
SMBus Register 0x24[3] 0x24[2] 0x24[1] 0x24[0] 0x25[7] 0x25[6] 0x25[5] 0x25[4]
Default Value 0xFA 1 1 1 1 1 0 1 0
Description 0x14 Reserved CH3_VOD_2 CH3_VOD_1 CH3_VOD_0 CH3_DEM_2 CH3_DEM_1 CH3_DEM_0 Reserved
SMBus Register 0x25[3] 0x25[2] 0x25[1] 0x25[0] 0x26[2] 0x26[1] 0x26[0] 0x27[7]
Default Value 0xD4 1 1 0 1 0 1 0 0
Description 0x15 Reserved Reserved Reserved Reserved Reserved hi_idle_SD CH0-3 hi_idle_SD CH4-7 fast_SD CH0-3
SMBus Register 0x27[3] 0x27[2] 0x27[1] 0x27[0] 0x28[6] 0x28[5] 0x28[4] 0x28[3]
Default Value 0x01 0 0 0 0 0 0 0 1
Description 0x16 fast_SD CH4-7 lo_gain_SD CH0-3 lo_gain_SD CH4-7 Reserved Reserved CH4_RXDET_1 CH4_RXDET_0 CH4_EQ_7
SMBus Register 0x28[2] 0x28[1] 0x28[0] 0x2B[5] 0x2B[4] 0x2B[3] 0x2B[2] 0x2C[7]
Default Value 0x80 1 0 0 0 0 0 0 0
Description 0x17 CH4_EQ_6 CH4_EQ_5 CH4_EQ_4 CH4_EQ_3 CH4_EQ_2 CH4_EQ_1 CH4_EQ_0 CH4_SCP
SMBus Register 0x2C[6] 0x2C[5] 0x2C[4] 0x2C[3] 0x2C[2] 0x2C[1] 0x2C[0] 0x2D[7]
Default Value 0x5F 0 1 0 1 1 1 1 1
Description 0x18 CH4_Sel_MODE Reserved Reserved Reserved CH4_VOD_2 CH4_VOD_1 CH4_VOD_0 CH4_DEM_2
SMBus Register 0x2D[6] 0x2D[5] 0x2D[4] 0x2D[3] 0x2D[2] 0x2D[1] 0x2D[0] 0x2E[2]
Default Value 0x5A 0 1 0 1 1 0 1 0
Description 0x19 CH4_DEM_1 CH4_DEM_0 Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x2E[1] 0x2E[0] 0x2F[7] 0x2F[3] 0x2F[2] 0x2F[1] 0x2F[0] 0x32[5]
Default Value 0x80 1 0 0 0 0 0 0 0
Description 0x1A Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x32[4] 0x32[3] 0x32[2] 0x33[7] 0x33[6] 0x33[5] 0x33[4] 0x33[3]
Default Value 0x05 0 0 0 0 0 1 0 1
Description 0x1B Reserved Reserved Reserved CH5_SCP CH5_Sel_MODE Reserved Reserved Reserved
SMBus Register 0x33[2] 0x33[1] 0x33[0] 0x34[7] 0x34[6] 0x34[5] 0x34[4] 0x34[3]
Default Value 0xF5 1 1 1 1 0 1 0 1
Description 0x1C CH5_VOD_2 CH5_VOD_1 CH5_VOD_0 CH5_DEM_2 CH5_DEM_1 CH5_DEM_0 Reserved Reserved
SMBus Register 0x34[2] 0x34[1] 0x34[0] 0x35[2] 0x35[1] 0x35[0] 0x36[7] 0x36[3]
Default Value 0xA8 1 0 1 0 1 0 0 0
Description 0x1D Reserved Reserved Reserved Reserved Reserved CH6_RXDET_1 CH6_RXDET_0 CH6_EQ_7
SMBus Register 0x36[2] 0x36[1] 0x36[0] 0x39[5] 0x39[4] 0x39[3] 0x39[2] 0x3A[7]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x1E CH6_EQ_6 CH6_EQ_5 CH6_EQ_4 CH6_EQ_3 CH6_EQ_2 CH6_EQ_1 CH6_EQ_0 CH6_SCP
SMBus Register 0x3A[6] 0x3A[5] 0x3A[4] 0x3A[3] 0x3A[2] 0x3A[1] 0x3A[0] 0x3B[7]
Default Value 0x5F 0 1 0 1 1 1 1 1
Description 0x1F CH6_Sel_MODE Reserved Reserved Reserved CH6_VOD_2 CH6_VOD_1 CH6_VOD_0 CH6_DEM_2
SMBus Register 0x3B[6] 0x3B[5] 0x3B[4] 0x3B[3] 0x3B[2] 0x3B[1] 0x3B[0] 0x3C[2]
Default Value 0x5A 0 1 0 1 1 0 1 0
Description 0x20 CH6_DEM_1 CH6_DEM_0 Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x3C[1] 0x3C[0] 0x3D[7] 0x3D[3] 0x3D[2] 0x3D[1] 0x3D[0] 0x40[5]
Default Value 0x80 1 0 0 0 0 0 0 0
Description 0x21 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x40[4] 0x40[3] 0x40[2] 0x41[7] 0x41[6] 0x41[5] 0x41[4] 0x41[3]
Default Value 0x05 0 0 0 0 0 1 0 1
Description 0x22 Reserved Reserved Reserved CH7_SCP CH7_Sel_MODE Reserved Reserved Reserved
SMBus Register 0x41[2] 0x41[1] 0x41[0] 0x42[7] 0x42[6] 0x42[5] 0x42[4] 0x42[3]
Default Value 0xF5 1 1 1 1 0 1 0 1
Description 0x23 CH7_VOD_2 CH7_VOD_1 CH7_VOD_0 CH7_DEM_2 CH7_DEM_1 CH7_DEM_0 Reserved Reserved
SMBus Register 0x42[2] 0x42[1] 0x42[0] 0x43[2] 0x43[1] 0x43[0] 0x44[7] 0x44[3]
Default Value 0xA8 1 0 1 0 1 0 0 0
Description 0x24 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x44[2] 0x44[1] 0x44[0] 0x47[3] 0x47[2] 0x47[1] 0x47[0] 0x48[7]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x25 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x48[6] 0x4C[7] 0x4C[6] 0x4C[5] 0x4C[4] 0x4C[3] 0x4C[0] 0x59[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x26 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x5A[7] 0x5A[6] 0x5A[5] 0x5A[4] 0x5A[3] 0x5A[2] 0x5A[1] 0x5A[0]
Default Value 0x54 0 1 0 1 0 1 0 0
Description 0x27 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x5B[7] 0x5B[6] 0x5B[5] 0x5B[4] 0x5B[3] 0x5B[2] 0x5B[1] 0x5B[0]
Default Value 0x54 0 1 0 1 0 1 0 0