參數(shù)資料
型號: HM67S18258
廠商: Hitachi,Ltd.
英文描述: 4M Synchronous Fast Static RAM (256k-words ×18-bits)(4M 同步快速靜態(tài)RAM (256k字 ×18位))
中文描述: 4分同步快速靜態(tài)存儲器(256k -字× 18位)(4分同步快速靜態(tài)隨機存儲器(256k字× 18位))
文件頁數(shù): 19/24頁
文件大小: 184K
代理商: HM67S18258
HM67S18258 Series
19
Test Access Port Registers
Register Name
Length
Symbol
Note
Instruction Register
3 bits
IR [0;2]
Bypass Register
1 bits
BP
ID Register
32 bits
ID [0;31]
Boundary Scan Register
51 bits
BS [1;51]
TAP Controller Instruction Set
IR2
IR1
IR0
Instruction
Operation
0
0
0
SAMPLE-Z
Tristate all data drivers and capture the pad value
0
0
1
IDCODE
0
1
0
SAMPLE-Z
Tristate all data drivers and capture the pad value
0
1
1
BYPASS
1
0
0
SAMPLE
1
0
1
BYPASS
1
1
0
BYPASS
1
Note:
1
1
BYPASS
This Device does not perform EXTEST, INTEST or the preload portion of the PRELOAD command
in IEEE 1149.1.
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