Lenovo NetVista Hardware Maintenance Manual (HMM) for NetVista 2284 systems - Page 150
P&D-D Signal Pin Assignments, evaluated in the case where both Charge Power
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P&D-D Signal Pin Assignments Pin Signal 1 TMDS Data2 + 2 TMDS Data2 - 3 TMDS Data2 return 4 Unused 5 Unused 6 Unused 7 TMDS Clock return 8 Charge power1 + 9 1394 pair A, data 10 1394 pair A, data + 11 TMDS Data1 + 12 TMDS Data1 13 TMDS Data1 return 14 TMDS Clock + 15 TMDS Clock - Pin Signal 16 USB data + 17 USB data - 18 1394 outer shield (optional) & Charge Power return2 19 1394 Vg 20 1394 Vp 21 TMDS Data0 + 22 TMDS Data0 - 23 TMDS Data0 return 24 Unused 25 DDC return 26 DDC data (SDA) 27 DDC clock (SCL) 28 +5 VDC 29 1394 pair B, Clock + 30 1394 pair B, Clock - 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. 116 IBM Desktop System HMM