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User's Manual
BAB
740
3—6
Connector Assignments
3.2
ADAP-200 Connectors
3.2.1 8-bit SCSI
Single-ended 8-bit SCSI signals are fed into row A and C of the
VMEbus P2 connector (X2002). An ADAP-200 is plugged onto the
rear side of the backplane to interface to standard 8-bit SCSI
connectors (a 50-pin flat cable connector)
If the BAB 740 is located at either end of the SCSI bus. J1601 must
be installed for signal termination, otherwise J1601 must be
removed.
Table 9: SCSI Connector 8-bit X103 (on ADAP-200)
Pin Description Pin Description
2
DB0
28
GND
4
DB1
30
GND
6
DB2
32
ATN
8
DB3
34
GND
10
DB4
36
BSY
12
DB5
38
ACK
14
DB6
40
RST
16
DB7
42
MSG
18
DB8
44
SEL
20
GND
46
CIO
22
GND
48
REQ
24
GND
50
I/O
26
TERM-PWR
All odd pins of the 50-pin SCSI connector except pin 25 are
connected to ground. Pin 25 is left open.
1
2
49
50
Front View
Pin 26 is connected to +5 V via a Shottky diode to supply power to
an external SCSI terminator.
Содержание BAB 740
Страница 1: ...BAB 740 Basic Automation Board with PowerPC 740 manual Revision 2C...
Страница 11: ...User s Manual Table of Contents BAB 740 V 7 1 9 PCI IDSEL 7 9 7 2 Factory settable Jumpers 7 9...
Страница 16: ...Table of Contents User s Manual BAB 740 X...
Страница 22: ...Specification Specification User s Manual BAB 740 1 6...
Страница 42: ...Connector Assignments User s Manual BAB 740 3 16 Connector Assignments...
Страница 50: ...Board Parameters Board Parameters User s Manual BAB 740 4 8...
Страница 60: ...Booting Booting User s Manual BAB 740 6 4...
Страница 74: ...NOTES...