8xx/COMM Expansion Connectors
http://www.motorola.com/computer/literature
6-17
6
Note
If the AUI option is not present on the MBX board, header J20
and other AUI-related parts are not populated.
8
xx
/COMM Expansion Connectors
MBX series embedded controllers support EBX form factor expansion
modules such as PC/104, PC/104-Plus, and 8xx/COMM modules. On
MBX860 boards, the 860/COMM expansion connector (P1), a 144-pin
high-density socket, provides the electrical connection for expansion
modules. On MBX821 boards, the 821/COMM expansion connector (P1)
performs a similar function. The pin assignments are listed in the following
two tables.
Table 6-9. Ethernet AUI Header Pin Assignments
DB15
Pin
Header
Pin
Signal
Signal
Header
Pin
DB15
Pin
1
1
GND
CD
−
2
9
2
3
CD+
TD
−
4
10
3
5
TD+
GND
6
11
4
7
GND
RD
−
8
12
5
9
RD+
+12V
10
13
6
11
GND
GND
12
14
7
13
14
15
8
15
GND
16
Table 6-10. 860/COMM Expansion Connector Pin Assignments
Pin #
Row A
Row B
Row C
Row D
1
RETRY#
TS#
COMMINT#
CLKOUT
2
GND
GND
CS#
GND
3
TA#
BB#
Reserved
SPKROUT
4
GND
AS#
Reserved
HRESET#
Summary of Contents for MBX Series
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