VMChannel [VESA Media Channel] Pinout Signal names and Bus Description

VMChannel Pinout

VMChannel [VESA Media Channel] describes a hardware interface for desktop multimedia systems.
The VMChannel [VMC] is a multiple master, multiple drop, clock synchronous interface designed for concurrent pixel data streams.
VMChannel is an industry standard 32-bit bus designed for carrying video data.
VMChannel enables the real time flow of uncompressed multimedia pixels in a bidirectional fashion between multiple video adapters.
This electrical interface is out-dated and should not be used in new designs, although the signal assignments are valid.

**VMChannel Connector Pinout**
Pin #	Signal name	Pin #	Signal name
1	SAN	35	N/C*
2	N/C*	36	DGND
3	BSN[0]	37	BSN[1]
4	DGND	38	SNRDYN
5	CONTROL	39	DGND
6	N/C	40	DGND
7	CLK	41	DGND
8	VMSENSE	42	DGND
9	MASK0	43	MASK1
10	DGND	44	DATA[0]
11	DATA[1]	45	DGND
12	DATA[2]	46	DATA[3]
13	DGND	47	DATA[4]
14	DATA[5]	48	DGND
15	DATA[6]	49	DATA[7]
16	DGND	50	DATA[8]
17	DATA[9]	51	DGND
18	DATA[10]	52	DATA[11]
19	DGND	53	DATA[12]
20	DATA[13]	54	DGND
21	DATA[14]	55	DATA[15]
22	DGND	56	DATA[16]
23	DATA[17]	57	DGND
24	DATA[18]	58	DATA[19]
25	DGND	59	DATA[20]
26	DATA[21]	60	DGND
27	DATA[22]	61	DATA[23]
28	DGND	62	DATA[24]
29	DATA[25]	63	DGND
30	DATA[26]	64	DATA[27]
31	DGND	65	DATA[28]
32	DATA[29]	66	DGND
33	DATA[30]	67	DATA[31]
34	DGND	68	SBN

The VMChannel pinout table has not yet been verified. Pin signal names indicated with a N/C* are unknown and may be connected to a signal.
The VMChannel may be an access slot or interface connector; as a 68 position connector, 1.27mm center-line, accepting a ribbon cable.
The VMchannel appeared in PC in the early 1990's and does not appear to be used any longer.

Electrical interfaces are listed on this site regardless of them being active or obsolete, VMChannel happens to be obsolete.

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Navigation: Engineering Home > Interface Buses > Cabled Interface Standards > Cabled Video Standards > Video Monitor Standards > VMChannel.


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