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CSP1035A датащи(PDF) 2 Page - Agere Systems |
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CSP1035A датащи(HTML) 2 Page - Agere Systems |
2 / 4 page 2 2 Agere Systems Inc. Product Brief September 2001 Host-Based Controller V.92 Modem Chip Set Agere Systems DSP1648C Functional Description DSP1648C The Agere Systems DSP1648C chip set is a two-chip solution consisting of Agere Systems DSP1648C digital signal processor, a CSP1035A silicon data access arrangement (DAA) or a CSP1034 line codec. An optional CSP1027 audio codec is required to sup- port full-duplex speakerphone. It supports V.92, V.90, V.34 data, and FAX rates up to 14.4 kbits/s. The host- based controller solution is compatible with Windows 95 and Windows 98 telephony application program interface (TAPI), including the unimodem and unimo- dem-V service providers, and can be used with off-the- shelf TAPI compliant voice and telephony applications. The DSP1648C chip set supports ITU-T V.253 based TAM features, using DLE shielded commands and AT+V commands supporting 7.2 kHz, 8.0 kHz, and 11.025 kHz for both 8-bit and 16-bit samples. Video-Ready Interface The video-ready interface supplied by the DSP1648C chip set provides video conferencing capability using traditional POTS lines. The implementation of the ITU-T V.80 standard provides a seamless interface for either software or hardware-accelerated ITU-T H.324 implementation. The host-based architecture of this chip set facilitates future upgrades. Telephone Answering Machine The TAM mode uses a modified version of the com- mand set defined by ITU-T recommendation V.253. All AT commands are sent through the COM port. The actual voice samples are sent by a WAVE driver directly to the data pump hardware. In order to be backward compatible to some voice applications, the DSP1648C also supports a standard V.253 command set. In V.253 voice commands, voice samples are sent to the COM port along with <DLE> shielded commands. Concurrent data, FAX, voice discrimination, and DTMF tone detection are supported during TAM mode. Dis- tinctive ring and synthesized rings are available in TAM mode. Figure 1. Agere Systems DSP1648C and Transformer-Based DAA Block Diagram with Audio Codec 5-6393 (F) n TELEPHONE LINE MICROPHONE SPEAKER DAA AUDIO CIRCUITRY PCI ROM CODED DSP1648C 100-PIN TQFP CSP1034C 48-PIN TQFP AUDIO CODEC CSP1027 48-PIN TQFP AGERE SYSTEMS DSP1648C HOST-BASED CONTROLLER MODEM CHIP OPTIONAL FOR DSP-BASED FDSP LINE CODEC HOST PROCESSOR |
Аналогичный номер детали - CSP1035A |
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Аналогичное описание - CSP1035A |
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