4 改訂履歴
Changes from C Revision (November 2018) to D Revision
- Added tDLH and tDHL to Output Load and Transition Times diagramGo
- Added 953A in the list of compatible serializersGo
- Changed text in MODE Pin Configuration figure from "Serializer" to "Deserializer"Go
- Clarified bit descriptions for registers 0x1D-0x1E bits 4 and 0Go
- Added timing diagram and data table for PDB to I2C ready delayGo
Changes from B Revision (October 2016) to C Revision
- Clarified when PCLK becomes active with respect to LOCK Go
- Added Power Over Coax supply noise to the recommended operating conditions table Go
- Corrected to tDLH and tDHL for data low-to-high and high-to-low transition time Go
- Moved the timing diagrams to the Parameter Measurement Information sectionGo
- Added reference to compatibility with DS90UB953-Q1/935-Q1 serializers Go
- Updated pullup and pulldown resistor to R1 and R2 in MODE pin configuration diagram Go
- Updated register "TYPE" column per legend Go
- Added type and default value to the reserved register bits that were missing this information Go
Changes from A Revision (June 2016) to B Revision
- Added Back Channel Line Rate specification; also added footnote for clarification between MHz and Mbps distinction.Go
- Revised back channel VOD specification from 175mV to 182 mV. Go
- Removed 'ns' unit from specifications referencing period in units of T.Go
- Revise Deserializer Delay specification due to the swapped information. Go
- Revised jitter tolerance curve to be for typical system IJT configuration with DS90UB913A linked to DS90UB914A. Go
- Added device functional mode table for external oscillator operation with example XCLKIN = 48MHz. Go
- Fixed typo and changed "deserializer" to "serializer".Go
- Added register 0x05 for Forward Channel Low Frequency Gain. Go
- Added registers 0x27, 0x47 for Forward Channel Tuning/Impedance Control.Go
- Revised rise time and delay conditions to include 10% to 90% parameters instead of VIH and VIL.Go
- Changed max rise time for VDDIO and VDD_N to be 5ms instead of 1.5ms during power-up. Go
- Revised power-up timing paragraph for clarity and correctness.Go
- Changed VIL and VIH specs to 10% and 90% respectively for rising/falling edges.Go
Changes from * Revision (April 2016) to A Revision
- ドキュメントを、DS90UB913A-Q1 SNLS443とDS90UB914A-Q1 SNLS499の2つに分割Go
- 改訂履歴を、このドキュメントがDS90UB913A-Q1 SNLS443データシートの一部であったときの変更部分も含めるよう結合Go
- Added 車載用機能Go
- Updated pin description for ROUT to include active/inactive outputs corresponding to MODE setting.Go
- Added pin description to GPIO pins to leave open if unused. Go
- Updated frequency requirements for 10-bit and 12-bit HF modes. 10-bit mode – 50 MHz to 100 MHz; 12-bit HF mode – 37.5 MHz to 75 MHz; 12-bit LF mode (no change) – 25 MHz to 50 MHz. Go
- Added pin description to RIN pins to leave open if unused. Go
- Changed Air Discharge ESD Rating (IEC61000-4-2: RD = 330 Ω, CS = 150 pF) to minimum ±25000 V. Go
- Added additional thermal characteristics.Go
- Added GPIO[3:0] typical pin capacitance Go
- Changed Differential Input Voltage minimum specification.Go
- Changed Single-Ended Input Voltage minimum specification.Go
- Added Back Channel Differential Output Voltage minimum specification.Go
- Added Back Channel Single-Ended Output Voltage minimum specification.Go
- Added footnote that states the following: “UI – Unit Interval is equivalent to one serialized data bit width. The UI scales with PCLK frequency.” Also added below calculations to footnote. 12-bit LF mode 1 UI = 1 / ( PCLK_Freq. x 28 ) 12-bit HF mode 1 UI = 1 / ( PCLK_Freq. x 2/3 x 28 ) 10-bit mode 1 UI = 1 / ( PCLK_Freq. /2 x 28 ) Go
- Updated IDDIOR for VDDIO=1.89V, CL=8pF, Worst-Case Pattern with f=50 MHz, 12-bit low freq mode to typical value of 16 mA; value is currently 21 mA. Go
- Updated IDDIOR for VDDIO=1.89V, CL=8pF, Random Pattern with f=50 MHz, 12-bit low freq mode to typical value of 10 mA; value is currently 14 mA.Go
- Updated IDDR for VDD_n=1.89V, CL=4pF, Random Pattern with f=100 MHz, 10-bit mode to typical value of 69 mA; value is currently 57 mA. Go
- Updated IDDR for VDD_n=1.89V, CL=4pF, Random Pattern with f=75 MHz, 12-bit high freq mode to typical value of 71 mA; value is currently 60 mA.Go
- Updated IDDR for VDD_n=1.89V, CL=4pF, Random Pattern with f=50 MHz, 12-bit low freq mode to typical value of 67 mA; value is currently 56 mA.Go
- Updated VOL Output Low Level row with revised IOL currents and max VOL voltages, dependent upon VDDIO voltage.Go
- Updated frequency ranges for MODE settings and also revised with correct maximum clock periods. Added footnote and nominal clock period to be in terms of 'T'.Go
- Changed typo on footnote to reflect 'tDPJ'.Go
- Updated Figure 2 title to state ‘“Worst-Case” Test Pattern for Power Consumption’ Go
- Updated Figure 3 “Deserializer Vswing Diagram” with correct notation. Go
- Changed Figure 3 to clarify difference between STP and CoaxGo
- Table 2, row 5 with “static” input LOCK output status changed to “L”. Go
- Table 5 heading updated to state “DS90UB914A-Q1 DESERIALIZER. Go
- Changed description of deserializer reg 0x00 bit[0]=0 from "set using address coming from CAD" to "set from ID[x]" .Go
- Added row to register 0x01[2] for Back Channel Enable – 0: Disable 1: Enable.Go
- Changed SSCG Units for fmod (register 0x02[3:0]) to Reflect Hz instead of KHz.Go
- Changed parity error reset bit to be NOT self-clearing. Go
- Changed EQ gain values (dB) @ maximum line rate (1.4Gbps).Go
- Changed description of deserializer reg 0x04 to have correct register setting for each equalization gain level.Go
- Added registers 0x26, 0x46 for Bidirectional Control Channel (BCC)Tuning. Go
- Added deserializer 0x4C SEL register.Go
- Updated EQ Register Bits 0x4E[3:0] to be Reserved. Also changed EQ gain values (dB) @ maximum line rate (1.4Gbps).Go
- Added reference to Power over Coax Application reportGo
- Updated power up sequencing information and timing diagram. Go
- Added power up sequencing information and timing diagram.Go
- Added 914A PDB Reset timing constraints and diagram. Go
- Removed Figure 21 and Figure 43 regarding adaptive equalizer graphs for loss compensation (Coax/STP). Go
- Renamed C1 and C2 to C22 and C23 for RIN0+ and RIN0- respectively on Typical Application Diagrams (Coax & STP). Go
- Added description specifying that the voltage applied on VDDIO (1.8 V, 3.3 V) or VDD_n (1.8 V) should be at the input pin – any board level DC drop should be compensated. Go
- Added 914A EVM layout example image. Go