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AIMB-250 Series
56 AIMB-250 Series User’s Manual
2.4.26 TMDS DVI Connector (JTMDS1)
Signal PIN PIN Signal
+5V 2 1 TDC0#
GND 4 3 TDC0
NC 6 5 NC
NC 8 7 NC
HPDET 10 9 TDC1#
TMDSDATA 12 11 TDC1
TMDSDCLK 14 13 NC
GND 16 15 NC
TLC# 18 17 TDC2#
TLC 20 19 TDC2
2.4.26.1 Signal Description – TMDS Connecter (JTMDS1)
Signal Type Signal Description
TDC0, TDC0# O
DVI Data Channel 0 Outputs: These pins provide the DVI differential
outputs for data channel 0 (blue).
TDC1, TDC1# O
DVI Data Channel 1 Outputs: These pins provide the DVI differential
outputs for data channel 1 (green).
TDC2, TDC2# O
DVI Data Channel 2 Outputs: These pins provide the DVI differential
outputs for data channel 2 (red).
HPDET I
Hot Plug Detect (internal pull-down): This input pin determines
whether the DVI is connected to a DVI monitor. When terminated,
the monitor is required to apply a voltage greater than 2.4 volts.
Changes on the status of this pin will be relayed to the graphics
controller via the P-OUT/TLDET* or GPIO (1)/TLDET* pin pulling low.
TMDSDATA I/O
DVO I2C Data: This signal is used as the I2C_DATA for a digital
display (i.e. TV-Out Encoder, TMDS transmitter). This signal is
tri-stated during a hard reset.
TMDSDCLK I/O
DVI DDC Clock: This signal is used as the DDC clock for a digital
display connector (i.e. primary digital monitor). This signal is tri-stated
during a hard reset.
TLC, TLC# O
DVI Clock Outputs: These pins provide the differential clock outputs
for the DVI interface corresponding to data on TDC (0:2) outputs.