Invention Grant
US07649929B2 Method and apparatus for reducing modem command and status latency on a digital audio interface within a direct access arrangement circuit
失效
用于在直接存取布置电路内的数字音频接口上降低调制解调器命令和状态延迟的方法和装置
- Patent Title: Method and apparatus for reducing modem command and status latency on a digital audio interface within a direct access arrangement circuit
- Patent Title (中): 用于在直接存取布置电路内的数字音频接口上降低调制解调器命令和状态延迟的方法和装置
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Application No.: US10881840Application Date: 2004-06-30
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Publication No.: US07649929B2Publication Date: 2010-01-19
- Inventor: Robert C. Wagner , Xun Yang
- Applicant: Robert C. Wagner , Xun Yang
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories
- Current Assignee: Silicon Laboratories
- Current Assignee Address: US TX Austin
- Agency: Dillon & Yudell LLP
- Agent Antony P. Ng
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
An apparatus for reducing modem command and status latency within a direct access arrangement (DAA) circuit is disclosed. The DAA circuit includes a serial audio interface for providing communications between the DAA circuit and the host computer system. The serial audio interface can operate under multiple serial communication interface standards, such as the AC '97 standard and the HD Audio standard. The DAA circuit also includes means for configuring the serial audio interface to transmit and receive modem samples at an audio sample rate higher than a modem sample rate of the modem samples and at a predetermined bit size that is wider than a bit size of the modem samples. The additional bits other than the modem samples are utilized to indicate command and status information associated with the DAA circuit or a telephone line such that modem command and status latency on the serial audio interface within the DAA circuit can be reduced.
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