SX-A Family FPGAs
1- 10
v5.3
JTAG Instructions
Table 1-7 lists the supported instructions with the corresponding IR codes for SX-A devices.
Table 1-8 lists the codes returned after executing the IDCODE instruction for SX-A devices. Note that bit 0 is always '1'.
Bits 11-1 are always '02F', which is the Actel manufacturer code.
Table 1-7 JTAG Instruction Code
Instructions (IR4:IR0)
Binary Code
EXTEST
00000
SAMPLE/PRELOAD
00001
INTEST
00010
USERCODE
00011
IDCODE
00100
HighZ
01110
CLAMP
01111
Diagnostic
10000
BYPASS
11111
Reserved
All others
Table 1-8 JTAG Instruction Code
Device
Process
Revision
Bits 31-28
Bits 27-12
A54SX08A
0.22
0
8, 9
40B4, 42B4
1
A, B
40B4, 42B4
A54SX16A
0.22
0
9
40B8, 42B8
1
B
40B8, 42B8
0.25
1
B
22B8
A54SX32A
0.2 2
0
9
40BD, 42BD
1
B
40BD, 42BD
0.25
1
B
22BD
A54SX72A
0.22
0
9
40B2, 42B2
1
B
40B2, 42B2
0.25
1
B
22B2