
Signal Descriptions
MOTOROLA
MPC821FADS-DB USER’S MANUAL
5-33
104
DBID2
DBID2
I/O, X
Daughterboard ID Code 2 signal. It is part of
the field that designates the type of
daughterboard connected.
105
BCSR3R13
BCSR3R13
I/O, X
Reserved signal 13 in BCSR3.
106
DBID4
DBID4
I/O, X
Daughterboard ID Code 4 signal. It is part of
the field that designates the type of
daughterboard connected.
107
CHINS
CHINS
I/O, L
Chip In Socket signal. When this signal is
active (low), MPC8xxFADS logic notices that
the evaluated MPC821 resides in its socket. If
inactive, either the MPC821 is out of socket or
a daughterboard is not connected, in which
case the MPC8xxFADS becomes a
debugging station.
108
GND
GND
—
109
110
—
—
—
Not connected.
111
112
GND
GND
—
113
114
—
—
—
Not connected.
115
116
GND
GND
—
117
118
—
—
—
Not connected.
119
120
GND
GND
—
121
122
—
—
—
Not connected.
123
124
GND
GND
—
125
126
—
—
—
Not connected.
127
128
GND
GND
—
129
130
—
—
—
Not connected.
131
132
GND
GND
—
133
Table 5-12. PM4 Interconnect Signals (Continued)
PIN
MOTHERBOARD
SIGNAL
DAUGHTERBOARD
SIGNAL
INPUT/
OUTPUT
DESCRIPTION
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