GS88237BB-250V 查看數據表（PDF） - Giga Semiconductor

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GS88237BB-250V

256K x 36 9Mb SCD/DCD Sync Burst SRAM

Giga Semiconductor 

GS88237BB/D-xxxV

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: 1.04 6/2006

22/28

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

© 2003, GSI Technology

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