The table below defines the pin out for the VME P2 connector. The table which defines the pin-out for the VME P1 connector is listed on the VMEbus P1 pin out page. Both Pin-Out tables define the 96 Pin DIN Connectors: 3 Rows x 32 Pins. Links to the 5-row [VME64] pin out are listed after the table. The main VMEbus page provides additional details including a bus interface description, Timing, connector types, card sizes, and electronic equipment and component manufacturers.
Pin # | Signal name | Signal name | Signal name |
---|---|---|---|
Row A | Row B | Row C | |
1 | User Defined | +5v | User Defined |
2 | GND | ||
3 | RETRY | ||
4 | A24 | ||
5 | A25 | ||
6 | A26 | ||
7 | A27 | ||
8 | A28 | ||
9 | A29 | ||
10 | A30 | ||
11 | A31 | ||
12 | GND | ||
13 | +5v | ||
14 | D16 | ||
15 | D17 | ||
16 | D18 | ||
17 | D19 | ||
18 | D20 | ||
19 | D21 | ||
20 | D22 | ||
21 | D23 | ||
22 | GND | ||
23 | D24 | ||
24 | D25 | ||
25 | D26 | ||
26 | D27 | ||
27 | D28 | ||
28 | D29 | ||
29 | D30 | ||
30 | D31 | ||
31 | GND | ||
32 | +5V |
The VME bus interface I/O 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].
The pin-out for the VME P2 connector is listed above. All cards
most have a P1 connector, which normally defines a 3U high card. Boards which have
a P2 are 6U boards (double height). How ever 6U circuit cards are produced
which do not have a P2 connector, or a card may have a P2 but may not bus
the "B" row. |
When the board uses a daughter card it may follow one of the Mezzanine
standards to bring out its I/O. The IP standard is normally used to
produce more (varied) I/O, or the PMC standard may be used (which
provides more processing power).
Boards may be produced which allow one of a number of high speed
"Cross-Bar" switches to increase the through-put of VME cards on the bus.
RaceWay does this by adding a daughter card (on the rear of the back
plane) across the P2 connectors.
A number of card designs place serial buses onto the user defined P2 pins, these
include: Autobahn, and SkyChannel.
VME64x and VME64 (optional) come with an enhanced connector. Five rows
instead of the 3 rows used in the original VME specification. The
160 pin DIN (5 row x 32 pin) add rows "z" and "d". Primarily these
additions are power (+3.3 volts) and ground (GND) on P1 and 'User
Defined' on P2 (next page). Rows "A", "B", and "C" remain unchanged. The
VME64 five row connector pinout is depicted on either the VMEbus P1 Pin out page or VMEbus P2 Pin out page.
There are a number of different connector types used with the
VMEbus
P1 and P2 are 96 pin DIN (41612, Type C) 3 rows x 32 pins [Pitch
2.54mm (.100")] @ IEEE 1014-1987; [VME]
P1 and P2 are 160 pin DIN (41612, Type C Expanded) 5 rows x 32
pins [Pitch 2.54mm (.100")] @ ANSI/VITA 1-1994; [VME64]
P1 connectors may also come with an Auto Bus Grant [ABG] option which is
an automatic [mechanical] switching capability built-in to auto jumper
the slot
P2 Split DIN / RF Coax (DIN 41612 Type M) DIN + Coax @ 78 + 2, 60
+ 4, 42 + 6, 24 + 8
The class of connectors determines the number of insertions it's
[Mechanical Endurance] designed to handle per DIN 41612.
Class 1: 500 mating cycles [the highest grade connector]
Class 2: 400 mating cycles [mid-grade]
Class 3: 50 mating cycles [the lowest grade]
A listing of companies that manufacturer VME DIN connectors and electronic equipment
and component manufacturers
is listed on the main VMEbus page
with additional details including connector types, bus pin outs.
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