PM7344 datasheet(263/293 Pages) PMC

263 / 293 page

PM7344 S/UNI-MPH

DATA SHEET

PMC-950449

ISSUE 6

MULTI-PHY USER NETWORK INTERFACE

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

247

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

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.

STCTEST

The single transport chain instruction is used to test out the TAP controller and

the boundary scan register during production test. When this instruction is the

current instruction, the boundary scan register is connected between TDI and

TDO. During the Capture-DR state, the device identification code is loaded into

the boundary scan register. The code can then be shifted out output, TDO using

the Shift-DR state.

14.3.1 Boundary Scan Cells

In the following diagrams, CLOCK-DR is equal to TCK when the current

controller state is SHIFT-DR or CAPTURE-DR, and unchanging otherwise. The

multiplexer in the centre of the diagram selects one of four inputs, depending on

the status of select lines G1 and G2. The ID Code bit is as listed in the Boundary

Scan Register table located in the TEST FEATURES DESCRIPTION - JTAG

Test Port section.

PM7344 Datasheet(PDF) 263 Page - PMC-Sierra, Inc