Invention Grant
- Patent Title: Bit stream conditioning circuit having adjustable PLL bandwidth
- Patent Title (中): 位流调节电路具有可调节的PLL带宽
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Application No.: US10418035Application Date: 2003-04-17
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Publication No.: US07321612B2Publication Date: 2008-01-22
- Inventor: Davide Tonietto , Ali Ghiasi
- Applicant: Davide Tonietto , Ali Ghiasi
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Garlick Harrison & Markison
- Agent Bruce E. Garlick; Kevin L. Smith
- Main IPC: H04B1/38
- IPC: H04B1/38

Abstract:
A high-speed bit stream interface module interfaces a high-speed communication media to a communication Application Specific Integrated Circuit (ASIC) via a Printed Circuit Board (PCB). The high-speed bit stream interface includes a line side interface, a board side interface, and a signal conditioning circuit. The signal conditioning circuit services each of an RX path and a TX path and includes a limiting amplifier and a clock and data recovery circuit. The signal conditioning circuit may also include an equalizer and/or an output pre-emphasis circuit. The clock and data recovery circuit has an adjustable Phase Locked Loop (PLL) bandwidth that is set to correspond to a jitter bandwidth of a serviced high-speed bit stream.
Public/Granted literature
- US20040022303A1 Bit stream conditioning circuit having adjustable PLL bandwidth Public/Granted day:2004-02-05
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