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| Product Brief September 2001 Agere Systems DSP1648C Host-Based Controller V.92 Modem Chip Set Features s Introduction The DSP1648C, host-accelerated modem chip is an exciting new upgrade to Agere Systems Inc. line of host-based controller modems. The DSP1648C upgrades the technologies found in the DSP1648 V.90 modem solution to the new ITU-T recommendations V.92 and V.44 communication industry standards. V.92 and V.44 have four innovative features, designed to improve modem performance in the internet environment. The new features are as follows: s s Two chip 3.3 V PCI modem solution with 5 V tolerant buffers Data mode capabilities: -- ITU-T V.92*: 56000 bits/s--28000 bits/s -- ITU-T V.90*: 56000 bits/s--28000 bits/s -- ITU-T V.34: 33600 bits/s--2400 bits/s -- V.32bis, and fallbacks -- V.42 and MNP TM error correction (LAPM) -- V.44, V.42bis and MNP Class 5 data compression FAX mode capabilities: -- ITU-T V.17, V.29, V.27ter, and V.21 Ch 2 -- ITU-T T.31 Class 1 FAX Compatible with transformer-based and silicon DAA circuits: -- High-precision sigma-delta codec (CSP1034C) -- Line-powered silicon DAA (CSP1035A) Enhanced voice features: -- Full-duplex speakerphone (requires CSP1027 audio codec) -- Telephone answering machine (TAM) -- Caller identification (caller-ID) V.80 video-ready interface Bit I/Os to support domestic and international DAAs Low power consumption Flexible power management modes Operating system support: -- Windows (R) 95, 98, 2000, Windows NT (R) 4.0, Windows ME, and Windows XP -- Linux (R) -- PC 2001 compliant s s Modem fast connect: faster start-up times. Modem on hold: switch between modem and an incoming phone call without losing the data connection. PCM upstream: send data to central site at rates approaching 48 kbits/s. Data compression enhancement focused on todays internet traffic. s s s s s s The DSP1648C has an integrated PCI interface, which eliminates the 16550 UART bottleneck found in traditional hardware modems. The PCI interface supports both slave and master operations while providing greater access to host PC system resources. Host-based controller modems have the benefit of using powerful CPUs and accessing their plentiful RAM and disk space. Modem firmware can therefore be updated in the field since the code simply resides on the disk. With this feature set, designers can create full-featured modem solutions which are characterized by low-cost, low power consumption, and high-performance. * Due to FCC limitations, speeds of 53 kbits/s are the maximum permissible transmit power levels during download transmission. Actual data speeds will vary depending on the line conditions. Modem on hold functionality requires call waiting services. s s s Agere Systems DSP1648C Host-Based Controller V.92 Modem Chip Set Product Brief September 2001 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 command 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 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 support full-duplex speakerphone. It supports V.92, V.90, V.34 data, and FAX rates up to 14.4 kbits/s. The hostbased controller solution is compatible with Windows 95 and Windows 98 telephony application program interface (TAPI), including the unimodem and unimodem-V service providers, and can be used with off-theshelf 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. AGERE SYSTEMS DSP1648C HOST-BASED CONTROLLER MODEM CHIP ROM CODED DSP1648C HOST PROCESSOR PCI 100-PIN TQFP LINE CODEC CSP1034C DAA TELEPHONE LINE 48-PIN TQFP MICROPHONE AUDIO CODEC CSP1027 AUDIO CIRCUITRY 48-PIN TQFP SPEAKER OPTIONAL FOR DSP-BASED FDSP 5-6393 (F) n Figure 1. Agere Systems DSP1648C and Transformer-Based DAA Block Diagram with Audio Codec 2 Agere Systems Inc. Agere Systems DSP1648C Host-Based Controller V.92 Modem Chip Set Product Brief September 2001 Integrated PCI Interface The DSP1648C features a ROM-coded DSP1600 core combined with the control and communications logic required to implement a modem data pump. The DSP1648 incorporates a PCI interface which supports two full-duplex bus master streams for greater access to host system resources. One PCI stream can be switched between the audio codec interface or the DSP core. The second full-duplex stream supports 4-word block transfers between system and DSP core. 3.3 V and 5 V signaling systems are supported for PCI bus buffers. The device supply must come from a 3.3 V PCI supply, vaux, or a regulated 3.3 V supply. Functional Description (continued) Changes from DSP1648 (Mars 3) DSP1648C is a digital IC that provides the engine for various modem standards. DSP1648C uses existing DSP1648 specifications and functionality with some enhancements. The following is a list of the new features: s Support for V.92 and V.44: -- Fast connect -- Modem on hold -- PCM upstream -- Improved data compression Additional on-chip RAM for V.92 support. Additional PCI power management for future WHQL requirements. Lower power dissipation. s s I/O Voltage Considerations The system supply voltage requirement is 3.3 V 0.3 Vdc. This device also employs a 5 V tolerant buffer topology. To support this 5 V tolerant I/O, the VIO pin (pin 93) is provided as an indicator to the device of the signaling voltage being used on the bus. s AGERE SYSTEMS LUCENT TECHNOLOGIES DSP1648C HOST-BASED CONTROLLER MODEM CHIP SET U-DAA ROM CODED DSP1648C HOST PROCESSOR PCI 100-PIN TQFP CSP1035A (LINE-POWERED) LINE CODEC UNIVERSAL DAA REMAINING COMPONENTS FOR U-DAA TELEPHONE LINE 48-PIN TQFP 0670 (F) d Figure 2. Agere Systems DSP1648C Host-Based Controller Modem Chip Set Block Diagram without Audio Codec 3 Agere Systems Inc. Agere Systems DSP1648C Host-Based Controller V.92 Modem Chip Set Product Brief September 2001 Package Information DSP1648C CSP 1035A CSP 1034C CSP 1027 100-PIN TQFP 48-PIN TQFP 48-PIN TQFP 48-PIN TQFP DIME (U.S.A.) DSP1648C CSP1035A CSP1034C CSP1027 DIME 0671 (f) c Figure 3. DSP1648C Chip Set Package Options Ordering Information Device DSP1648C CSP1034C CSP1035A CSP1027 Description Modem Chip Modem Codec Silicon DAA Audio Codec Voltage 3.3/5 V 3.3 V 3.3 V 3.3/5 V Package 100 TQFP 48 TQFP 48 TQFP 48 TQFP Part Number 1648C-TV5SEGV-DB CSP1034C-T11 CSP1035A-T11 CSP1027-S11 Comcode 109061374 108159542 108393935 106888555 MNP is a trademark of Microcom, Inc. Windows and Windows NT are registered trademarks of Microsoft Corporation. Linux is a registered trademark of William Della Croce, Jr. For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen) JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 778-8833, TAIWAN: (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 7000 624624, FAX (44) 1344 488 045 Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. Copyright (c) 2001 Agere Systems Inc. All Rights Reserved September 2001 PB01-028DMOD |
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