Invention Grant
- Patent Title: Reset scheme for scan chains with asynchronous reset signals
- Patent Title (中): 具有异步复位信号的扫描链的复位方案
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Application No.: US14251297Application Date: 2014-04-11
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Publication No.: US09564877B2Publication Date: 2017-02-07
- Inventor: Dipti Ranjan Pal , Paul Ivan Penzes , Wai Kit Siu
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM INCORPORATED
- Current Assignee: QUALCOMM INCORPORATED
- Current Assignee Address: US CA San Diego
- Agency: Arent Fox LLP
- Main IPC: G01R31/28
- IPC: G01R31/28 ; H03K3/012 ; H03K3/037 ; G11C19/34 ; G01R31/3185
Abstract:
A first apparatus includes at least one scan chain. Each of the at least one scan chain includes scan cells coupled together. Each scan cell in the at least one scan chain includes a first type of scan cell when a reset state of the scan cell is a first state, and a second type of scan cell when the reset state of the scan cell is a second state. One or more scan chains of the at least one scan chain includes at least one of the first type of scan cell and at least one of the second type of scan cell. A second apparatus includes first and second sets of scan chains including flip-flops without both set and reset functionality. Each of the flip-flops in the first and second sets of scan chains has a reset state of a first state and a second state, respectively.
Public/Granted literature
- US20150295560A1 RESET SCHEME FOR SCAN CHAINS WITH ASYNCHRONOUS RESET SIGNALS Public/Granted day:2015-10-15
Information query
