Invention Grant
US08281196B2 Device address port circuitry with local, group, and global outputs
有权
器件地址端口电路，具有本地，组和全局输出
- Patent Title: Device address port circuitry with local, group, and global outputs
- Patent Title (中): 器件地址端口电路，具有本地，组和全局输出
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Application No.: US13238736Application Date: 2011-09-21
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Publication No.: US08281196B2Publication Date: 2012-10-02
- Inventor: Lee D. Whetsel
- Applicant: Lee D. Whetsel
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Lawrence J. Bassuk; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: G01R31/28
- IPC: G01R31/28
Abstract:
The disclosure describes a novel method and apparatus for making device TAPs addressable to allow device TAPs to be accessed in a parallel arrangement without the need for having a unique TMS signal for each device TAP in the arrangement. According to the disclosure, device TAPs are addressed by inputting an address on the TDI input of devices on the falling edge of TCK. An address circuit within the device is associated with the device's TAP and responds to the address input to either enable or disable access of the device's TAP.
Public/Granted literature
- US20120011412A1 ADDRESSABLE TEST ACCESS PORT METHOD AND APPARATUS Public/Granted day:2012-01-12
Information query
