- 专利标题: INTEGRATED CIRCUIT WITH HIGH-SPEED CLOCK BYPASS BEFORE RESET
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申请号: US17078708申请日: 2020-10-23
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公开(公告)号: US20210211132A1公开(公告)日: 2021-07-08
- 发明人: Jose Luis FLORES , Venkateswar Reddy KOWKUTLA , Ramakrishnan VENKATASUBRAMANIAN
- 申请人: TEXAS INSTRUMENTS INCORPORATED
- 申请人地址: US TX Dallas
- 专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人地址: US TX Dallas
- 主分类号: H03L7/08
- IPC分类号: H03L7/08 ; H03K19/20 ; H03K5/00 ; G06F1/10 ; G06F1/08
摘要:
An integrated circuit includes: a clock domain having a clock domain input; and clock management logic coupled to the clock domain. The clock management logic includes: a PLL having a reference clock input and a PLL clock output; a divider having a divider input and a divider output, the divider input coupled to the PLL clock output; and bypass logic having a first clock input, a second clock input, a bypass control input, and a bypass logic output, the first clock input coupled to divider output, the second clock input coupled to the reference clock input, and the bypass logic output coupled to the clock domain input. The bypass logic selectively bypasses the PLL and divider responsive to a bypass control signal triggered by a reset signal. The reset signal also triggers a reset control signal delayed relative to the bypass control signal.
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