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Applications
MOTOROLA
MC68322 USER’S MANUAL
B-9
B.6 CONFIGURING THE IN-CIRCUIT EMULATION
The MC68322 provides an ICE option, which is included here. The ICE connection is a
simple pin-grid-array to an ICE board available from Motorola. The ICE option can be
implemented in the prototype stages of designing a printing system and can remain
available through production as a method of testing, debugging, and field service. See
Appendix A In-Circuit Emulation Interface for ICE board specifications.
To provide an ICE option, the HI-Z signal should be connected to a pull-up resistor and not
directly to VCC. The ICE PGA pattern should be placed on the PCB and typically the
MC68322 can be placed inside the cut-out section of the PGA. All signals from the MC68322
160-pin quad flat pack (QFP) must be connected to the ICE PGA connector. The special
version of the MC68322, along with the ICE board, allow a standard MC68000 DIP format
emulator to be used. This type of interface allows existing emulators to be reused with
virtually no additional investment. Figure B-8 illustrates the MC68322 ICE interface.
Figure B-8. MC68322 ICE Interface
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
MA10
MD0
MD1
MD2
MD3
MD4
MD5
MD6
MD7
MD8
MD9
MD10
MD11
MD12
MD13
MD14
MD15
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
75
74
73
72
70
69
68
67
65
64
63
62
61
59
58
57
56
55
53
52
51
50
49
47
46
135
133
132
131
130
128
127
126
125
124
122
44
43
42
41
39
38
37
34
33
32
31
30
28
27
26
25
121
120
118
117
116
115
114
113
111
110
109
108
106
105
104
156
155
154
152
151
150
148
147
IC68322/A (PGA–23x23)
IC68322/B (PGA–23x23)
+5V
7
14
29
40
48
60
71
88
93
102
112
123
134
144
153
GND
1
12
21
35
36
45
54
66
78
90
96
107
119
129
138
149
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
CLK2
HI-Z
RESET
13
158
136
159
TEST
BR
AS
R/W
23
19
20
18
161
2
160
WAIT
IRQ0
IRQ1
146
145
141
143
140
87
84
79
83
81
76
98
97
95
94
92
91
101
100
99
11
10
9
8
6
5
4
3
17
16
15
24
22
BG
EDTACK
CS0
CS1
CS2
CS3
CS4
CS5
CS6
CS7
RD
WRL
WRU
RAS0
RAS1
RAS2
RAS3
RAS4
RAS5
CAS0
CAS1
WE
DACK
CCLK
CBSY
CMD
VIDEO
PRINT
ACK
BUSY
SELECT
PERROR
FAULT
DREQ
SBSY
STS
VCLK
FSYNC
LSYNC
SELECTIN
STROBE
AUTOFD
INIT
77
82
80
89
85
86
137
157
139
142
EMURST
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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