SLLU350 April   2022 TUSB1142

 

  1.   Trademarks
  2. 1Overview
    1. 1.1 What is the TUSB1142 EVM?
    2. 1.2 What is Included in the TUSB1142 EVM?
    3. 1.3 What Does the EVM Look Like?
  3. 2Hardware Configuration
    1. 2.1 Power
    2. 2.2 Configuration Jumpers
    3. 2.3 CEQ Configuration
    4. 2.4 SSEQ Configuration
    5. 2.5 Local I2C Access
  4. 3Quick Start Guide
  5. 4Schematics
    1.     14
    2.     15
    3.     16

2.2 Configuration Jumpers

Multiple jumpers are provided on the EVM for configuration of TUSB1142 and also for probe points.

The following is a list of 4-level jumpers which are used to configure the TUSB1142: JMP6, JMP7, JMP8, JMP9, JMP10, JMP11, JMP12, and JMP13. The jumper position to select between the different levels is detailed in 4-level Configuration Jumper Settings Table.

Note: 4-level pins are sampled on rising edge of EN pin. Therefore, a change in any 4-level pin state will not be applied until after EN pin is toggled from low to high.
Table 2-1 4-Level Configuration Jumper Settings
Jumper Position4-level State
Short 5 to 60
Short 3 to 4R
OpenF
Short 1 to 21
Table 2-2 Jumpers
JumperDefault PositionDescription
JMP2OpenCC1. Pin 1 is probe point for CC1
JMP3OpenCC2. Pin 1 is probe point for CC2
JMP4Short 3 to 4FLIP/SCL.
If TUSB1142 is configured for I2C mode (MODE pin (JMP13)) is floating, then jumper is clock for local I2C. Ensure R19 is populated.
If TUSB1142 is configured for pin-strap mode, then this jumper controls the internal 2:1 mux.
  • By default this pin is controleld be U2 based on the CC pin configuration.
If manual control is desired, ensure that R19 is populated :
  • Short 1 to 2: CRX1 -> SSRX and SSTX -> CTX1.

  • Short 3 to 4: CRX2 -> SSRX and SSTX -> CTX2

JMP5Short 1 to 2AEQENZ/SDA.
If TUSB1142 is configured for I2C mode (MODE pin (JMP13)) is floating, then jumper is data for local I2C.
If TUSB1142 is configured for pin-strap mode, then jumper selects whether AEQ is enabled or not.
  • Short 1 to 2: AEQ disabled.
  • Short 3 to 4: AEQ enabled.
JMP6OpenSSEQ1/A1.
If TUSB1142 is configured for I2C mode (MODE pin (JMP13)) is floating, then this jumper along with JMP6 will select the 7-bit I2C target address. Refer to TUSB1142 data sheet for details on available I2C target address options.
If TUSB1142 is configured for pin-strap mode, then this jumper along with JMP6 selects EQ settings for SSTX receivers. Refer to TUSB1142 data sheet for details on EQ settings.
JMP7OpenSSEQ0/A0.
If TUSB1142 is configured for I2C mode (MODE pin (JMP13)) is floating, then this jumper along with JMP5 will select the 7-bit I2C target address. Refer to TUSB1142 data sheet for details on available I2C target address options.
If TUSB1142 is configured for pin-strap mode, then this jumper along with JMP5 selects EQ settings for SSTX receivers. Refer to TUSB1142 data sheet for details on EQ settings.
JMP8OpenEQCFG.
If TUSB1142 is configured for I2C mode (MODE pin (JMP13)) is floating, then this jumper must be left floating for normal operation.
If TUSB1142 is configured for pin-strap mode, then this jumper will select EQ options for SSTX receiver and CRX receivers. Refer to TUSB1142 data sheet for details.
JMP9OpenAEQCFG.
Selects upper limit for AEQ. Refer to TUSB1142 data sheet for details.
JMP10OpenCEQ1.
If TUSB1142 is configured for pin-strap mode, then this jumper along with JMP10 selects EQ settings for CRX receivers. Refer to TUSB1142 data sheet for details on EQ settings.
JMP11OpenCEQ0.
If TUSB1142 is configured for pin-strap mode, then this jumper along with JMP10 selects EQ settings for CRX receivers. Refer to TUSB1142 data sheet for details on EQ settings.
JMP12Short 1 to 2MODE.
Selects between pin-strap and I2C mode. The default is pin-strap mode.
  • Short 1 to 2: Pin-strap mode
  • Open: I2C mode.
JMP13OpenVIO_SEL.
Selects whether local I2C interface is at 1.8 V or 3.3 V signalling levels. The default is 3.3 V. Short pins 1 and 2 to select 1.8 V.
JMP14OpenSLP_S0#.

JMP15

Short 3 to 4EN.
The EN will enable or disable the TUSB1142.
By default this jumper is configured for confrim from U2

JMP16

Open

TPS25820 CHG pin.
Used to select between standard USB or 1.5-A Type-C current sourcing ability.

JMP17

Open

TPS25820 Faultz pin.
Used to montior fualt condition on USB Type-C receptacle VBUS.

JMP18

Open

TPS25820 EN pin.
Logic input to turn TPS25820 (U2) device on and off
JMP19OpenPower for TUSB1142.
Selects whether TUSB1142 is powered from VBUS or 5 V barrel jack. The default is power from USB VBUS. Shorting between position 1 and 2 will select the 5 V barrel jack.
JMP20OpenThe local I2C voltage pull-up option. The default is local I2C pull-ups are connected to TUSB1142's 3.3 V VCC supply. Removing R47 allows for feeding external DC supply for local I2C.