Ddi1 Port - ADLINK Technology intel COM Express Express-TL User Manual

Express-TL User's Guide
4.4.3

DDI1 Port

Name Pin #
DDI1_PAIR0+ D26
DDI1_PAIR0- D27
DDI1_PAIR1+ D29
DDI1_PAIR1- D30
DDI1_PAIR2+ D32
DDI1_PAIR2- D33
DDI1_PAIR3+ D36
DDI1_PAIR3- D37
DDI1_PAIR4+ C25
DDI1_PAIR4- C26
DDI1_PAIR5+ C29
DDI1_PAIR5- C30
DDI1_PAIR6+ C15
C16
DDI1_PAIR6-
DDI1_HPD C24
DDI1_CTRLCLK_AUX+ D15
DDI1_CTRLCLK_AUX- D16
DDI1_DDC_AUX_SEL D34
Note: Dual Mode (HDMI and DisplayPort on the same pins) implementations may be realized. This is desirable for SOCs that natively implement
this capability. With such SOCs, the primary Dual Mode implementation challenge is that the HDMI_CTRL_DAT and HDMI_CTRL_CK lines are DC
coupled, but the DP_AUX+ /- pair must be AC coupled. A set of FET switches is usually used to sort this out. The FET gates can be controlled by
the AUX_SEL pin function.
Page 44
DisplayPort (DP) HDMI
DP1_LANE0+ TMDS1_DATA2+
DP1_LANE0- TMDS1_DATA2-
DP1_LANE1+ TMDS1_DATA1+
DP1_LANE1- TMDS1_DATA1-
DP1_LANE2+ TMDS1_DATA0+
DP1_LANE2- TMDS1_DATA0-
DP1_LANE3+ TMDS1_CLK+
DP1_LANE3- TMDS1_CLK-
- -
- -
- -
DP1_HPD HDMI1_HPD
DP1_AUX+ HMDI1_CTRLCLK
DP1_AUX- HMDI1_CTRLDATA
DDI1_DDC_AUX_SEL DDI1_DDC_AUX_SEL
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