PM7367 datasheet(296/323 Pages) PMC

296 / 323 page

PM7367 FREEDM-32P32

DATA SHEET

PMC-1991499

ISSUE 2

FRAME ENGINE AND DATA LINK MANAGER

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

282

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.

Boundary Scan Instructions

The following is a description of the standard instructions. Each instruction

selects a serial test data register path between input, TDI and output, TDO.

BYPASS

The bypass instruction shifts data from input, TDI to output, TDO with one TCK

clock period delay. The instruction is used to bypass the device.

EXTEST

The external test instruction allows testing of the interconnection to other

devices. When the current instruction is the EXTEST instruction, the boundary

scan register is place between input, TDI and output, TDO. Primary device

inputs can be sampled by loading the boundary scan register using the

Capture-DR state. The sampled values can then be viewed by shifting the

boundary scan register using the Shift-DR state. Primary device outputs can be

controlled by loading patterns shifted in through input TDI into the boundary scan

SAMPLE

The sample instruction samples all the device inputs and outputs. For this

instruction, the boundary scan register is placed between TDI and TDO. Primary

device inputs and outputs can be sampled by loading the boundary scan register

using the Capture-DR state. The sampled values can then be viewed by shifting

the boundary scan register using the Shift-DR state.

IDCODE

The identification instruction is used to connect the identification register

between TDI and TDO. The device's identification code can then be shifted out

using the Shift-DR state.

PM7367 датащи(PDF) 296 Page - PMC-Sierra, Inc