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Table 26
HDMI/DVI Signal Descriptions
Signal
Pin # Description
I/O
PU/PD
Comment
TMDS
TMDS0_DATA2-
B71
B72
HDMI/DVI TMDS lane 2 differential pair.
O DP++
TMDS
TMDS0_DATA1-
B73
B74
HDMI/DVI TMDS lane 1 differential pair.
O DP++
TMDS
TMDS0_DATA0-
B75
B76
HDMI/DVI TMDS lane 0 differential pair.
O DP++
TMD
TMDS0_CLK -
B81
B82
HDMI/DVI TMDS Clock output differential pair.
O DP++
HDMI0_HPD
B89
HDMI/DVI Hot-plug detect.
I
PD 100k
HDMI0_CTRLCLK
B98
HDMI/DVI I
2
C Control Clock
I/O OD 3.3V PU 5k 3.3V
HDMI0_CTRLDATA
B99
HDMI/DVI I
2
C Control Data
I/O OD 3.3V PU 5k 3.3V
Note
To support the HDMI/DVI interface, implement an external level translator/shifter (e.g. PTN3360D) on the carrier board.
Table 27
General Purpose Serial Interface Signal Descriptions
Signal
Pin # Description
I/O
PU/PD
Comment
SER0_TX
A98
General purpose serial port transmitter
O 3.3V
3.3V
12 volt tolerant
SER1_TX
A101
General purpose serial port transmitter
O 3.3V
3.3V
12 volt tolerant
SER0_RX
A99
General purpose serial port receiver
I 3.3V
PU 47K 3.3V
12 volt tolerant
SER1_RX
A102
General purpose serial port receiver
I 3.3V
PU 47K 3.3V
12 volt tolerant
Note
For the correct implementation, see the COM Express Design Guide.
Table 28
I2C Interface Signal Descriptions
Signal
Pin # Description
I/O
PU/PD
Comment
I2C_CK
B33
General purpose I2C port clock output
I/O OD 3.3VSB
PU 2.2K 3.3VSB
I2C_DAT
B34
General purpose I2C port data I/O line
I/O OD 3.3VSB
PU 2.2K 3.3VSB