PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
Figure 21 – TAP Controller Finite State Machine
TRSTB=0
Test-Logic-Reset
1
0
0
1
1
1
Run-Test-Idle
Select-IR-Scan
Select-DR-Scan
0
0
1
1
Capture-IR
Capture-DR
0
0
Shift-IR
Shift-DR
1
0
1
0
0
1
1
Exit1-IR
Exit1-DR
0
0
Pause-IR
1
Pause-DR
1
0
0
0
Exit2-IR
1
Exit2-DR
1
Update-IR
Update-DR
1
0
1
0
All transitions dependent on input TMS
Test-Logic-Reset
The test logic reset state is used to disable the TAP logic when the device is in normal mode
operation. The state is entered asynchronously by asserting input, TRSTB. The state is entered
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
205
PMC [ PMC-SIERRA, INC ]
