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Connector Pin Assignments
2-2
2
Note
QACK_ signal on the MPC603 has a 1K-ohm pull-down resistor to
allow the MPC603 processor to enter the state required for reading
and writing SCAN string data.
CPU Connector (J2)
This 190-pin SMT connector with a center row of power and ground pins
is used to provide access to the processor bus (MPU bus) and some
MPC105 signals. This CPU connector may be used to add L2 cache or to
upgrade the processor.
Pin numbers and signal mnemonics for J2 are shown in Table 2-2.
14
KEY
15
216
OUT
CHECKSTOP
_
10K pullup
16
GND
Table 2-2. CPU Connector Pin Assignments (J2)
1
PA0
PA1
2
3
PA2
PA3
4
5
PA4
PA5
6
7
PA6
PA7
8
9
PA8
PA9
10
11
PA10
PA11
12
13
PA12
PA13
14
15
PA14
PA15
16
17
PA16
PA17
18
19
PA18
GND
PA19
20
Table 2-1. RISCWatch Header J1 (Continued)
Header J1
Pin No.
MPC603 Pin No.
(240-pin QFP)
MPC603
I/O
Signal Name
Resistor
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