參數(shù)資料
型號: SN74LVT8980FK
廠商: Texas Instruments, Inc.
英文描述: EMBEDDED TEST-BUS CONTROLLERS IEEE STD 1149.1 JTAG TAP MASTERS WITH 8-BIT GENERIC HOST INTERFACES
中文描述: 嵌入式測試總線控制器IEEE標準1149.1 JTAG接口,8咨詢大師比特通用主機接口
文件頁數(shù): 10/34頁
文件大?。?/td> 495K
代理商: SN74LVT8980FK
SN54LVT8980, SN74LVT8980
EMBEDDED TEST-BUS CONTROLLERS
IEEE STD 1149.1 (JTAG) TAP MASTERS WITH 8-BIT GENERIC HOST INTERFACES
SCBS676C – DECEMBER 1996 – REVISED AUGUST 1997
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
host access timing (continued)
For write access (R/W low), the eTBC data outputs remain at high impedance independent of STRB. The
address of the register to be written is latched from the address pins on the falling edge of STRB, while the data
to be written is latched from the data bus on the rising edge of STRB.
tPHL
th
th
STRB
RDY
R/W
D
A
tsu
tsu
Valid
tPLH
tPZH or tPZL
tPHZ or tPLZ
Figure 6. Read Access Timing
th
tPHL
th
th
STRB
RDY
R/W
D
A
tsu
tsu
Valid
tPLH
tsu
Valid
Figure 7. Write Access Timing
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