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Table 17 DDI Signal Description
Signal Pin # Description I/O PU/PD Comment
DDI1_PAIR0+
DDI1_PAIR0-
D26
D27
Multiplexed with DP1_LANE0+ and TMDS1_DATA2+
Multiplexed with DP1_LANE0- and TMDS1_DATA2-
O PCIE
DDI1_PAIR1+
DDI1_PAIR1-
D29
D30
Multiplexed with DP1_LANE1+ and TMDS1_DATA1+
Multiplexed with DP1_LANE1- and TMDS1_DATA1-
O PCIE
DDI1_PAIR2+
DDI1_PAIR2-
D32
D33
Multiplexed with DP1_LANE2+ and TMDS1_DATA0+
Multiplexed with DP1_LANE2- and TMDS1_DATA0-
O PCIE
DDI1_PAIR3+
DDI1_PAIR3-
D36
D37
Multiplexed with DP1_LANE3+ and TMDS1_CLK+
Multiplexed with DP1_LANE3- and TMDS1_CLK-
O PCIE
DDI1_PAIR4+
DDI1_PAIR4-
C25
C26
Digital Display Interface 1, differential pair 4 Not connected
DDI1_PAIR5+
DDI1_PAIR5-
C29
C30
Digital Display Interface 1, differential pair 5 Not connected
DDI1_PAIR6+
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 1 MΩ
DDI1_CTRLCLK_AUX+ D15 Multiplexed with DP1_AUX+ 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 PCIE
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).
DDI enable strap already populated.
DDI1_DDC_AUX_SEL D34 Selects the function of DDI1_CTRLCLK_AUX+ 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
DDI2_PAIR0+
DDI2_PAIR0-
D39
D40
Multiplexed with DP2_LANE0+ and TMDS2_DATA2+
Multiplexed with DP2_LANE0- and TMDS2_DATA2-
O PCIE
DDI2_PAIR1+
DDI2_PAIR1-
D42
D43
Multiplexed with DP2_LANE1+ and TMDS2_DATA1+
Multiplexed with DP2_LANE1- and TMDS2_DATA1-
O PCIE
DDI2_PAIR2+
DDI2_PAIR2-
D46
D47
Multiplexed with DP2_LANE2+ and TMDS2_DATA0+
Multiplexed with DP2_LANE2- and TMDS2_DATA0-
O PCIE
DDI2_PAIR3+
DDI2_PAIR3-
D49
D50
Multiplexed with DP2_LANE3+ and TMDS2_CLK+
Multiplexed with DP2_LANE3- and TMDS2_CLK-
O PCIE
DDI2_HPD D44 Multiplexed with DP2_HPD and HDMI2_HPD I 3.3 V PD 1 MΩ
DDI2_CTRLCLK_AUX+ C32 Multiplexed with DP2_AUX+ 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 PCIE
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 PCIE
I/O OD 3.3 V
PU 100 kΩ
3.3 V
Bootstrap signal (see note below).
DDI enable strap already populated.
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