Datasheet
SN75DP122A
SLLS939 – NOVEMBER 2008 ............................................................................................................................................................................................
www.ti.com
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NAME NO.
MAIN LINK INPUT PINS
ML_IN 0 3, 4 I DisplayPort main link channel 0 differential input
ML_IN 1 6, 7 I DisplayPort main link channel 1 differential input
ML_IN 2 9, 10 I DisplayPort main link channel 2 differential input
ML_IN 3 12, 13 I DisplayPort main link channel 3 differential input
MAIN LINK PORT A OUTPUT PINS
DP_SINK 0 56, 55 O DisplayPort main link port a channel 0 differential output
DP_SINK 1 53, 52 O DisplayPort main link port a channel 1 differential output
DP_SINK 2 50, 49 O DisplayPort main link port a channel 2 differential output
DP_SINK 3 47, 46 O DisplayPort main link port a channel 3 differential output
MAIN LINK PORT B OUTPUT PINS
TMDS_SINK 2 25, 24 O TMDS data 2 differential output
TMDS_SINK 1 22, 21 O TMDS data 1 differential output
TMDS_SINK 0 19, 18 O TMDS data 0 differential output
TMDS_SINK CLK 16, 15 O TMDS data clock differential output
HOT PLUG DETECT PINS
HPD 37 O Hot plug detect output to the displayport source
DP_HPD_SINK 40 I DisplayPort port hot plug detect input
TMDS_HPD_SINK 32 I TMDS port hot plug detect input
AUXILIARY DATA PINS
AUX_I
2
C 36, 35 I/O Source side bidirectional displayport auxiliary data line
AUX_SINK 45, 43 I/O DisplayPort port bidirectional displayport auxiliary data line
I
2
C_SCL 29,
I/O TMDS port bidirectional ddc data lines
I
2
C_SDA 28
CABLE ADAPTER DETECT PINS
CAD 39 O Cable adapter detect output to the displayport source
CAD_SINK 41 I DisplayPort cable adapter detect input
CONTROL PINS
LP 30 I Low power select bar
Priority 33 I Output port priority selection
DPVadj 1 I DisplayPort main link output gain adjustment
VSadj 26 I TMDS compliant voltage swing control
I
2
C_EN 31 I Internal I
2
C register enable, used for HDMI / DVI connector differentiation
SUPPLY and GROUND PINS
VDD 2, 8, 34, 48, 54 5-V supply
VDD
*1
38 HPD/CAD supply
VCC 14, 17, 23 3.3-V supply
GND 5, 11, 20, 27, 42, 44, 51 Ground
4 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): SN75DP122A