ProASIC to SX-A PQ208
Prototyping Adapter Board
User Document for P/N SI-SXA-APAPQ208-KIT
December 2003
Introduction
The SI-SXA-APAPQ208 adapter board is a prototyping tool that maps the footprint of an Actel ProASIC
device in a PQFP208 package on the top to the footprint of an Actel SX-A device on the bottom. Using this
adapter board, designs targeted for production in an SX-A FPGA can be prototyped using the re-
programmable ProASIC family.
Pin 1 SX-A
U1
52
53
ProASIC
Pin 1
208
26 25
J1
ProASIC
2 1
157
104
156
105
Top View
Figure 1:
SI-SXA-APAPQ208 Top and Bottom View Drawings
Bottom View
The SI-SXA-APAPQ208 adapter board is manufactured by Ironwood. The complete SI-SXA-APAPQ208-
KIT adapter board solution is a two-piece product consisting of a top “adapter board” and a bottom “foot”.
The foot portion maps directly to the PQ208 footprint of an SX-A device and should be soldered directly to
a system PCB. The top adapter board portion attaches to the foot through a PGA-like interconnecting grid.
A ProASIC A500K130-PQ208I device is attached onto the top adapter board piece. A small ISP header is
provided with the adapter, and the FlashPro programmer can be connected directly to the top adapter
board for programming the ProASIC device. The pins of the ProASIC device are mapped down to the
corresponding SX-A pin connections on the system board.
The SI-SXA-APAPQ208-KIT consists of:
Actel Part Number
Ironwood Part Number
Component
SI-SXA-APAPQ208-A
SI-SXA-APAPQ208-B
SMPA-ISP-HEADER-S
C4654
C4741
n/a
top adapter board
bottom foot
Small ISP header
This two-piece prototyping adapter board solution allows the top adapter board to be mobile and re-used
as required during the prototyping stage of design development. The top adapter board can be used to
prototype any SX-A design in the PQ208 package, as it can be easily attached and detached from multiple
“feet” placed on a system board, and can be re-programmed as needed to verify multiple designs.
ProASIC to SX-A Pin Mapping Connections
Following are pin mapping connections for the SI-SXA-APAPQ208 adapter board.
Table 1 on page 4
lists the I/O pin mapping between the ProASIC device on top and the SX-A device on
the bottom. When prototyping in ProASIC, the I/O connections for the target SX-A device should be
mapped to the ProASIC PQ208 according to
Table 1.
By default, the adapter board comes with a ProASIC
2
ProASIC to SX-A PQ208 Prototyping Adapter Board
A500K130-PQ208I device and is qualified to run at industrial temperature range. The bottom SX-A
footprint can be targeted to any SX-A family member (e.g. SX08A, SX16A, SX32A, or SX72A). As some
subtle differences in the pin assignments exist for the different SX-A family members, please refer to the
table below to ensure the pin mapping is properly managed.
Table 2 on page 7
lists the pin-out for the programming header included with the top adapter board.
Table 3 on page 7
through
Table 7 on page 8
list the connections for all power and ground connections
between the SX-A and ProASIC device. This is shown for information only, and users do not have to make
any modifications in the V
CC
/GND connections on their board. As long as the system board provides
normal power and ground connections to the pins of the bottom SX-A footprint, the signals are
automatically mapped to the correct ProASIC pins through the adapter board.
Important I/O Considerations for Mapping Designs from SX-A to ProASIC
Key to Signal Mapping Notes in
Table 1
(NC:
+:
x:
No Connect Pin)
A54SX08A NC
A54SX16A NC
–:
Q:
G:
A54SX32A NC
A54SX72A QCLK
A54SX72A GND
V:
A54SX72A V
CC
A:
B:
SX-A Probe A
SX-A Probe B
The following I/Os are
not
mapped in the adapter:
SX-A Pins 67, 106, 155, 156, 167, 170, and 173.
Note:
These I/Os can still be used in the transition from the adapter to SX-A device. These seven pins are
NC for the A54SX08A, but are available as user I/Os for other SX-A devices.
SX-A Pins 25 and 132
are NC for all SX-A devices except A54SX72A. Pin 132 is NOT mapped in the
adapter board, but Pin 25 is available for use with the adapter board.
SX-A Pin 189
is NC for A54SX08A and I/O for all other SX-A devices. Pin 189 is mapped in the adapter
board and is available for use with the adapter board.
SX-A Pins 80 and 182
are NC for all SX-A devices.
ProASIC to SX-A PQ208 Prototyping Adapter Board
3
Pin Mapping for A500K (Top) to SX-A (Bottom)
Table 1:
Pin Mapping
Signal
I/O_2
I/O_3
I/O_4
I/O_5
I/O_6
I/O_7
I/O_8
I/O_9
I/O_10
I/O_11
I/O_12
I/O_13
I/O_14
I/O_15
I/O_18
I/O_19
I/O_20
I/O_21
I/O_23
I/O_24
GL_0
GL_1
I/O_27
I/O_28
I/O_30
I/O_31
I/O_32
I/O_33
I/O_34
I/O_35
I/O_37
I/O_38
I/O_39
I/O_42
I/O_43
I/O_44
A500K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
18
19
20
21
23
24
25
26
27
28
30
31
32
33
34
35
37
38
39
42
43
44
SX-A
53
54
55
56
57
58
59
61
+
62
63
64
+
65
-
66
68
69
70
+
71
72
73
+
74
Q
84
Q
82
76
B
81
75
+
83
V
85
+
86
87
88
+
89
90
91
+
92
93
94
+
Table 1:
Pin Mapping (Continued)
Signal
I/O_45
I/O_46
I/O_47
I/O_48
I/O_49
I/O_50
I/O_51
I/O_54
I/O_55
I/O_56
I/O_57
I/O_58
I/O_59
I/O_60
I/O_61
I/O_62
I/O_63
I/O_64
I/O_66
I/O_67
I/O_68
I/O_69
I/O_70
I/O_73
I/O_74
I/O_75
I/O_76
I/O_77
I/O_78
I/O_79
I/O_80
I/O_82
I/O_83
I/O_84
I/O_85
I/O_86
A500K
45
46
47
48
49
50
51
54
55
56
57
58
59
60
61
62
63
64
66
67
68
69
70
73
74
75
76
77
78
79
80
82
83
84
85
86
SX-A
95
96
97
+
99
100
101
102
104
107
108
+
109
110
111
112
113
116
+G
117
V
118
119
+
120
121
122
+
123
124
125
+
126
127
128
133
134
135
+
136
137
138
+
139
140
4
ProASIC to SX-A PQ208 Prototyping Adapter Board
Table 1:
Pin Mapping (Continued)
Signal
I/O_87
I/O_90
I/O_91
I/O_92
I/O_93
I/O_94
I/O_95
I/O_96
I/O_98
I/O_99
I/O_100
TRST, I/O_109
I/O_111
I/O_112
I/O_113
I/O_114
I/O_115
I/O_116
I/O_117
I/O_118
I/O_119
I/O_120
I/O_121
I/O_124
I/O_125
I/O_127
I/O_128
I/O_129
I/O_131
I/O_132
GL_2
GL_3
I/O_135
I/O_136
I/O_137
I/O_139
I/O_140
A500K
87
90
91
92
93
94
95
96
98
99
100
109
111
112
113
114
115
116
117
118
119
120
121
124
125
127
128
129
131
132
133
134
135
136
137
139
140
SX-A
141
+
142
143
+
144
147
149
150
151
152
153
154
30
158
159
161
162
163
165
166
168
169
171
172
174
175
176
+
177
178
Q
179
186
A
180
181
187
V
188
190
Q
191
192
+
Table 1:
Pin Mapping (Continued)
Signal
I/O_143
I/O_144
I/O_145
I/O_146
I/O_147
I/O_148
I/O_149
I/O_150
I/O_151
I/O_152
I/O_153
I/O_154
I/O_155
I/O_158
I/O_159
I/O_160
I/O_161
I/O_163
I/O_164
I/O_165
I/O_166
I/O_167
I/O_168
I/O_169
I/O_172
I/O_173
I/O_174
I/O_175
I/O_176
I/O_177
I/O_179
I/O_180
I/O_181
I/O_182
I/O_183
I/O_184
I/O_185
A500K
143
144
145
146
147
148
149
150
151
152
153
154
155
158
159
160
161
163
164
165
166
167
168
169
172
173
174
175
176
177
179
180
181
182
183
184
185
SX-A
193
194
195
+
196
197
198
+
199
200
202
+
203
+
204
205
+
206
189
+
207
3
4
+
5
6
+
7
8
9
10
13
14
+
15
16
17
+
18
G
19
V
20
+
21
22
23
+
24
25
+x-
29
ProASIC to SX-A PQ208 Prototyping Adapter Board
5
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