VME (VERSAmodule Eurocard) P1

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VME P1 - 96 pin DIN (41612, Type C) 3 rows x 32 pins VME P1 Connector - 96 pin DIN (41612, Type C) 3 rows x 32 pins [Pitch 2.54mm (.100”)] @ IEEE 1014-1987

VMEbus is a computer architecture. The term ‘VME’ stands for VERSAmodule Eurocard and was first coined in 1980 by the group of manufacturers who defined it. This group was composed of people from Motorola, Mostek and Signetics corporations who were cooperating to define the standard. The term ‘bus’ is a generic term describing a computer data path, hence the name VMEbus. Actually, the origin of the term ‘VME’ has never been formally defined. Other widely used definitions are VERSAbus-E, VERSAmodule Europe and VERSAmodule European. However, the term ‘Eurocard’ tends to fit better, as VMEbus was originally a combination of the VERSAbus electrical standard, and the Eurocard mechanical form factor. VERSAbus was first defined by Motorola Corporation in 1979 for its 68000 microprocessor.

Pin # Signal Name Signal Name Signal Name
Row A Row B Row C
1 D00 BBSY* D08
2 D01 BCLR* D09
3 D02 ACFAIL* D10
4 D03 BG0IN* D11
5 D04 BG0OUT* D12
6 D05 BG1IN* D13
7 D06 BG1OUT* D14
8 D07 BG2IN* D15
9 GND BG2OUT* GND
10 SYSCLK BG3IN* SYSFAIL*
11 GND BG3OUT* BERR*
12 DS1* BRO* SYSRESET*
13 DS0* BR1* LWORD*
14 WRITE* BR2* AM5
15 GND BR3* A23
16 DTACK* AM0 A22
17 GND AM1 A21
18 AS* AM2 A20
19 GND AM3 A19
20 IACK* GND A18
21 IACKIN* SERCLK A17
22 IACKOUT* SERDAT* A16
23 AM4 GND A15
24 A07 IRQ7* A14
25 A06 IRQ6* A13
26 A05 IRQ5* A12
27 A04 IRQ4* A11
28 A03 IRQ3* A10
29 A02 IRQ2* A09
30 A01 IRQ1* A08
31 -12v +5v Standby +12v
32 +5v +5v +5v

Notes

  • (*) Active Low
  • The VMEbus signal types are listed below:
    • Open collector signals which require Open Collector drivers and receivers: ACFail, BBSY, BERR, DTACK, IACK, SERDAT, SYSFAIL, SYSRESET, [IRQ1 - IRQ7], and [BR0 - BR3].
    • Three-State signals which require 3-State drivers and receivers: AS, DS0, DS1, DTACK, RETRY, IACK, LWORD, WRITE, [AM0 - AM5], [A01 - A31], and [D00 - D31].
    • Totem-Pole signals which require Totem-Pole drivers and receivers: BCLR, SYSCLK, SERCLK, IACKIN, IACKOUT, [BG0IN - BG3IN], [BG0OUT - BG3OUT].

References

Category:Buses Connectors

 

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