IBM Aptiva 2174, Hardware Maintenance Service

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125
1
-- Optional output from monitor.
2
-- Note: The IEEE-1394 internal cable bundle needs an outer shield to
minimize internal crosstalk within the cable construction. The outer EMI
containment shield for the IEEE-1394 function will be provided by the
overall P&D cable shield. If the internal bundle shield for IEEE-1394 is
required, this may be terminated to pin #18. It is recommended that this
implementation be evaluated in the case where both Charge Power return
and the IEEE-1394 internal cable bundle shield will be commoned to pin
#18.
P&D-D Signal Pin Assignments
Pin Signal Pin Signal
1 TMDS Data2 + 16 USB data +
2 TMDS Data2 - 17 USB data -
3 TMDS Data2 return 18 1394 outer shield (optional) &
Charge Power return
2
4 Unused 19 1394 Vg
5 Unused 20 1394 Vp
6 Unused 21 TMDS Data0 +
7 TMDS Clock return 22 TMDS Data0 -
8
Charge power +
1 23 TMDS Data0 return
9 1394 pair A, data - 24 Unused
10 1394 pair A, data + 25 DDC return
11 TMDS Data1 + 26 DDC data (SDA)
12 TMDS Data1 - 27 DDC clock (SCL)
13 TMDS Data1 return 28 +5 VDC
14 TMDS Clock + 29 1394 pair B, Clock +
15 TMDS Clock - 30 1394 pair B, Clock -