GS8182Q18D Datasheet, PDF (24/28 Pages) GSI Technology – 18Mb Burst of 2 SigmaQuad-II SRAM

Preliminary
GS8182Q18D-200/167/133
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.
SAMPLE/
PRELOAD
100
Captures I/O ring contents. Places the Boundary Scan Register between TDI and
TDO.
RFU
101 Do not use this instruction; Reserved for Future Use.
RFU
110 Do not use this instruction; Reserved for Future Use.
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: 1.02 11/2004
24/28
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2003, GSI Technology