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Table 17 DDI Signal Description
Signal
Pin # Description
I/O
PU/PD
Comment
DDI
DDI1_PAIR0-
D26
D27
Multiplexed with DP and TMDS
Multiplexed with DP1_LANE0- and TMDS1_DATA2-
O DP
DDI
DDI1_PAIR1-
D29
D30
Multiplexed with DP and TMDS
Multiplexed with DP1_LANE1- and TMDS1_DATA1-
O DP
DDI
DDI1_PAIR2-
D32
D33
Multiplexed with DP and TMDS
Multiplexed with DP1_LANE2- and TMDS1_DATA0-
O DP
DDI
DDI1_PAIR3-
D36
D37
Multiplexed with DP and TM
Multiplexed with DP1_LANE3- and TMDS1_CLK-
O DP
DDI
DDI1_PAIR4-
C25
C26
Digital Display Interface 1, differential pair 4
Not connected
DDI
DDI1_PAIR5-
C29
C30
Digital Display Interface 1, differential pair 5
Not connected
DDI
DDI1_PAIR6-
C15
C16
Digital Display Interface 1, differential pair 6
Not connected
DDI1_HPD
C24
Multiplexed with DP1_HPD and HDMI1_HPD
I 3.3 V
PD 100 kΩ
DDI1_CTRL
D15
Multiplexed with and HMDI1_CTRLCLK
DP AUX+ function if DDI1_DDC_AUX_SEL is no connect
HDMI/DVI I2C CTRLCLK if DDI1_DDC_AUX_SEL is pulled high
I/O DP
I/O OD 3.3 V
PD 100 kΩ
DDI1_CTRLDATA_AUX-
1
D16
Multiplexed with DP1_AUX- and HDMI1_CTRLDATA
DP AUX- function if DDI1_DDC_AUX_SEL is no connect
HDMI/DVI I2C CTRLDATA if DDI1_DDC_AUX_SEL is pulled high
I/O PCIE
I/O OD 3.3 V
PU 100 kΩ
3.3V
Bootstrap signal (see note below).
Enable strap is already populated
DDI1_DDC_AUX_SEL
D34
Selects the function of DDI1_CTRL and DDI1_CTRLDATA_AUX-.
This pin shall have a IM pull-down to logic ground on the module. If this
input is floating, the AUX pair is used for the DP AUX+/- signals. If pulled-
high, the AUX pair contains the CTRLCLK and CTRLDATA signals
I 3.3 V
PD 1 MΩ
DDI
DDI2_PAIR0-
D39
D40
Multiplexed with DP and TMDS
Multiplexed with DP2_LANE0- and TMDS2_DATA2-
O DP
DDI
DDI2_PAIR1-
D42
D43
Multiplexed with DP and TMDS
Multiplexed with DP2_LANE1- and TMDS2_DATA1-
O DP
DDI
DDI2_PAIR2-
D46
D47
Multiplexed with DP and TMDS
Multiplexed with DP2_LANE2- and TMDS2_DATA0-
O DP
DDI
DDI2_PAIR3-
D49
D50
Multiplexed with DP and TM
Multiplexed with DP2_LANE3- and TMDS2_CLK-
O DP
DDI2_HPD
D44
Multiplexed with DP2_HPD and HDMI2_HPD
I 3.3 V
PD 100 kΩ
DDI2_CTRL
C32
Multiplexed with and HDMI2_CTRLCLK
DP AUX+ function if DDI2_DDC_AUX_SEL is no connect
HDMI/DVI I2C CTRLCLK if DDI2_DDC_AUX_SEL is pulled high
I/O DP
I/O OD 3.3 V
PD 100 kΩ
DDI2_CTRLDATA_AUX-
1
C33
Multiplexed with DP2_AUX- and HDMI2_CTRLDATA
DP AUX- function if DDI2_DDC_AUX_SEL is no connect
HDMI/DVI I2C CTRLDATA if DDI2_DDC_AUX_SEL is pulled high
I/O DP
I/O OD 3.3 V
PU 100 kΩ
3.3 V
Bootstrap signal (see note below).
Enable strap is already populated