IBM 2274 manual D Signal Pin Assignments, Optional output from monitor IBM Desktop System HMM

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 return2
4	Unused	19	1394 Vg
5	Unused	20	1394 Vp
6	Unused	21	TMDS Data0 +
7	TMDS Clock return	22	TMDS Data0 -
8	Charge power1 +	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 -

1

2

Optional output from monitor.

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 func- tion 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