Motorola MVME712B User Manual

Page 43

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Support Information

3-10

MVME712-12/-13/A/AM/B Transition Modules and LCP2 Adapter Board UserÕs Manual

3

10

DB04*

DATA bus (bit 4)

11

GND

GROUND

12

DB05*

DATA bus (bit 5)

13

GND

GROUND

14

DB06*

DATA bus (bit 6)

15

GND

GROUND

16

DB07*

DATA bus (bit 7) - most signiÞcant bit and the
highest priority during the arbitration phase.

17

GND

GROUND

18

DBP*

DATA bus (parity) - data parity is odd. Use of
parity is a system option. Parity is not valid
during the arbitration phase.

19-24

GND

GROUND

25

Not used.

26

TERMPWR

TERMINATOR POWER

27-31

GND

GROUND

32

ATN*

ATTENTION - signal driven by the initiator.
Indicates the attention condition.

33-35

GND

GROUND

36

BSY*

BUS BUSY - OR-tied signal that indicates that
the bus is being used.

37

GND

GROUND

38

ACK*

ACKNOWLEDGE - signal driven by an initiator
to indicate an acknowledgment for a REQ/ACK
data transfer handshake.

39

GND

GROUND

40

RST*

RESET - OR-tied signal that indicates the RESET
condition.

41

GND

GROUND

42

MSG*

MESSAGE - signal driven by the target during
the message phase.

43

GND

GROUND

44

SEL*

SELECT - signal used by an initiator to select a
target or by a target to reselect an initiator.

45

GND

GROUND

Table 3-6. Connector J3 Interconnect Signals (LCP2 Adapter) (Continued)

Pin

Number

Signal

Mnemonic

Signal Name and Description

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