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L2702-15 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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L2702-15 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 24 page V.90/K56flex Modem Device Sets with SmartDAA Technology for Low Power Applications SmartACFL Doc. No. 100444A Conexant 3 Proprietary Information Introduction (continued) The optional Voice Codec (VC) supports voice/full- duplex speakerphone (FDSP) operation with interfaces to a microphone and speaker and to a telephone handset/headset. The optional RCDSVD Speech Codec Processor (SCP) supports DSVD. The modem operates by executing firmware from external 1 Mbit (128k X 8) RAM and 2 Mbit (256k X 8) ROM/Flash ROM. The 33S and 14S models can alternatively use external 1 Mbit or 2 Mbit ROM/Flash ROM and the MCU’s internal 32K X 8 RAM. For GSM support the ROM size is doubled. Accelerator kits and reference designs are available in electronic form to minimize application design time and costs. The design package includes schematics, bill of materials (BOM), board layout files in Gerber format, and complete documentation. The design is pretested to pass FCC Part 15, Part 68, and CTR 21 for immediate manufacturing. Applications • PC Cards • Embedded systems • Serial box modems • Set top boxes • Point of sales terminals • Remote monitoring and data collection systems Modem Data Pump (MDP) P9373: 100-Pin TQFP Voice Codec (VC) 20437: 32-Pin TQFP (Optional) SPEAKER (Mic/Speaker) Interface (Optional) TIP RING Electronic Inductor, Diode Bridge, Protection & EMI, Impedance Components SmartDAA Interface Modem Data Pump (MDP) Telephone Line Digital Speaker Circuit (Optional) PCCard/Parallel/ Serial DTE Interface MIC SPEAKER MD251F2_FID SOUNDUCER Digital Isolation Barrier (DIB) (OEM supplied) Line Side Device (LSD) 20463: 32-Pin TQFP Line Side DIB Interface (LSDI) Codec Telephone Line Interface DAA Hardware HS Hybrid Components (Optional) Cellular Interface GSM Interface RAM 1M (128K x 8) Central Processor Unit (MCU) SPEAKER Serial EEPROM 2K (256 x 8) to 32K (4K x 8) (Optional) ROM/Flash ROM 2M (256K x 8) 4M (512K X 8)* * = GSM Support MCU Interface MDP Interface Internal RAM Serial EEPROM Interface Expansion Memory Bus Interface Cellular and GSM Interface Host Interface Microcontroller Unit (MCU) L2702: 128-Pin TQFP Rectifier and Filter Components Figure 1. SmartACFL Modem Major Interfaces |
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