GS8321Z18E Datasheet, PDF (26/34 Pages) GSI Technology – 36Mb Pipelined and Flow Through Synchronous NBT SRAMs

GS8321Z18/32/36E-250/225/200/166/150/133
JTAG TAP Instruction Set Summary
Instruction Code
Description
EXTEST
000 Places the Boundary Scan Register between TDI and TDO.
IDCODE
001 Preloads ID Register and places it between TDI and TDO.
SAMPLE-Z
Captures I/O ring contents. Places the Boundary Scan Register between TDI and
010 TDO.
Forces all RAM output drivers to High-Z.
RFU
011
Do not use this instruction; Reserved for Future Use.
Replicates BYPASS instruction. Places Bypass Register between TDI and TDO.
SAMPLE/
PRELOAD
100
Captures I/O ring contents. Places the Boundary Scan Register between TDI and
TDO.
GSI
101 GSI private instruction.
RFU
110
Do not use this instruction; Reserved for Future Use.
Replicates BYPASS instruction. Places Bypass Register between TDI and TDO.
BYPASS
111 Places Bypass Register between TDI and TDO.
Notes:
1. Instruction codes expressed in binary, MSB on left, LSB on right.
2. Default instruction automatically loaded at power-up and in test-logic-reset state.
Notes
1
1, 2
1
1
1
1
1
1
Rev: 1.06b 2/2006
26/34
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2003, GSI Technology