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| 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)： | 20/34頁 |
| 文件大?。?/td> | 495K |
| 代理商： | SN74LVT8980FK |
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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
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Table 7. TMS Sequencing From TAP State Test-Logic-Reset
FROM TEST-LOGIC-RESET (TMS = H) TO:
TEST-LOGIC-RESET
RUN-TEST-IDLE
SHIFT-DR
PAUSE-DR
SHIFT-IR
PAUSE-IR
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
H
T-L-R
L
R-T/I
L
R-T/I
L
R-T/I
L
R-T/I
L
R-T/I
H
S-DR-S
H
S-DR-S
H
S-DR-S
H
S-DR-S
L
Capture-DR
L
Capture-DR
H
S-IR-S
H
S-IR-S
L
Shift-DR
H
Exit1-DR
L
Capture-IR
L
Capture-IR
L
Pause-DR
L
Shift-IR
H
Exit1-IR
L
Pause-IR
Table 8. TMS Sequencing From TAP State Run-Test/Idle
FROM RUN-TEST/IDLE (TMS = L) TO:
TEST-LOGIC-RESET
RUN-TEST-IDLE
SHIFT-DR
PAUSE-DR
SHIFT-IR
PAUSE-IR
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
H
S-DR-S
L
R-T/I
H
S-DR-S
H
S-DR-S
H
S-DR-S
H
S-DR-S
H
S-IR-S
L
Capture-DR
L
Capture-DR
H
S-IR-S
H
S-IR-S
H
T-L-R
L
Shift-DR
H
Exit1-DR
L
Capture-IR
L
Capture-IR
L
Pause-DR
L
Shift-IR
H
Exit1-IR
L
Pause-IR
Table 9. TMS Sequencing From TAP State Pause-DR
FROM PAUSE-DR (TMS = L) TO:
TEST-LOGIC-RESET
RUN-TEST-IDLE
SHIFT-DR
PAUSE-DR
SHIFT-IR
PAUSE-IR
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
NEXT
TMS
NEXT
TAP
STATE
H
Exit2-DR
H
Exit2-DR
H
Exit2-DR
H
Exit2-DR
H
Exit2-DR
H
Exit2-DR
H
Update-DR
H
Update-DR
L
Shift-DR
H
Update-DR
H
Update-DR
H
Update-DR
H
S-DR-S
L
R-T/I
H
S-DR-S
H
S-DR-S
H
S-DR-S
H
S-IR-S
L
Capture-DR
H
S-IR-S
H
S-IR-S
H
T-L-R
H
Exit1-DR
L
Capture-IR
L
Capture-IR
L
Pause-DR
L
Shift-IR
H
Exit1-IR
L
Pause-IR
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