参数资料
型号: PM7351-BI
厂商: PMC-SIERRA INC
元件分类: 数字传输电路
英文描述: OCTAL SERIAL LINK MULTIPLEXER
中文描述: ATM/SONET/SDH SUPPORT CIRCUIT, PBGA304
封装: 31 X 31 MM, 1.51 MM HEIGHT, 1.27 MM PITCH, SBGA-304
文件页数: 150/174页
文件大小: 1790K
代理商: PM7351-BI
RELEASED
PM7351 S/UNI-VORTEX
DATA SHEET
PMC-1980582
ISSUE 5
OCTAL SERIAL LINK MULTIPLEXER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
140
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.
12.4.1 Boundary Scan Instructions
The following is an description of the standard instructions. Each instruction
selects an 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
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.
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