PM5347 datasheet(248/302 Pages) PMC

248 / 302 page

PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

232

entered asynchronously by asserting input, TRSTB. The

state is entered synchronously regardless of the current TAP

controller state by forcing input, TMS high for 5 TCK clock

cycles. While in this state, the instruction register is set to

the IDCODE instruction.

Run-Test-Idle:

The run test/idle state is used to execute tests.

Capture-DR:

The capture data register state is used to load parallel data

into the test data registers selected by the current

instruction. If the selected register does not allow parallel

loads or no loading is required by the current instruction, the

test register maintains its value. Loading occurs on the

rising edge of TCK.

Shift-DR:

The shift data register state is used to shift the selected test

data registers by one stage. Shifting is from MSB to LSB

and occurs on the rising edge of TCK.

Update-DR:

The update data register state is used to load a test

are used to control the device. For example, for the EXTEST

instruction, the boundary scan test register's parallel output

latches are used to control the device's outputs. The parallel

output latches are updated on the falling edge of TCK.

Capture-IR:

The capture instruction register state is used to load the

instruction register with a fixed instruction. The load occurs

on the rising edge of TCK.

Shift-IR:

The shift instruction register state is used to shift both the

instruction register and the selected test data registers by

one stage. Shifting is from MSB to LSB and occurs on the

rising edge of TCK.

Update-IR:

The update instruction register state is used to load a new

instruction into the instruction register. The new instruction

must be scanned in using the Shift-IR state. The load occurs

on the falling edge of TCK.

The Pause-DR and Pause-IR states are provided to allow

shifting through the test data and/or instruction registers to

be momentarily paused.

PM5347 Datasheet(PDF) 248 Page - PMC-Sierra, Inc

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