cExpress-TL User’s Guide
PICMG COM.0 R3.0
Page 47
Copyright © 2021 ADLINK Technology, Inc.
4.4.4
DDI2 Port
Name
Pin #
Displayport (DP)
HDMI
DDI
DDI2_PAIR0-
D39
D40
DP
DP2_LANE0-
TMDS
TMDS2_DATA2-
DDI
DDI2_PAIR1-
D42
D43
DP
DP2_LANE1-
TMDS
TMDS2_DATA1-
DDI
DDI2_PAIR2-
D46
D47
DP
DP2_LANE2-
TMDS
TMDS2_DATA0-
DDI
DDI2_PAIR3-
D49
D50
DP
DP2_LANE3-
TM
TMDS2_CLK-
DDI2_HPD D44
DP2_HPD
HDMI2_HPD
DDI2_CTRL C32
HMDI2_CTRLCLK
DDI2_CTRLCLK_AUX- C33
DP2_AUX-
HMDI2_CTRLDATA
DDI2_DDC_AUX_SEL C34
DDI2_DDC_AUX_SEL DDI2_DDC_AUX_SEL
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 /- 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.
