PM7366-PI datasheet(259/286 Pages) PMC

259 / 286 page

RELEASED

PM7366 FREEDM-8

DATA SHEET

PMC-1970930

ISSUE 4

FRAME ENGINE AND DATA LINK MANAGER

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

246

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

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 register using the Update-DR

state.

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.

PM7366-PI Datasheet(PDF) 259 Page - PMC-Sierra, Inc