Overview
The LC89210 is a highly integrated modem engine that can be used in products that support transmission rates up to the 14,400 bps rate used in contemporary group III fax equipment. The LC89210 is compatible with V.21, V.23 and Bell 103 full-duplex modems.

FEATUREs
• Supports the ITU-T V.17, V.29, and V.27ter fax standards
• ITU-T V.23, V.21, and Bell 103
• V.17, V.29 (T104), and V.27ter short training
• V.33 half duplex
• 1800-Hz or 1700-Hz carrier
• The LC89210 is a complete data pump on a single chip.
• 5 V single-voltage power supply
   — Operating power dissipation: 375 mW (typical)
   — Low power mode: 5 mW (typical)
• Expanded operating modes
   — Full implementation of V.17, V.33, V.29, and V.27ter handshaking
   — Autodial and autoanswer functions
   — Programmable tone detection and FSK V.21 flag pattern detection during high-speed reception
   — Programmable call progresss and call waiting tone detection, including DTMF
   — Support for programmable CLASSTM detection
   — Wide dynamic range (better than 48 dB)
   — A-law voice PCM mode
• Multiple interfaces
   — Parallel 64 ×8-bit dual-port RAM
   — Synchronous/HDLC parallel data processing
   — Support for HDLC framing
   — V.24 interface
   — Can monitor all operating states in real time.
   — Includes all diagnostic functions.
   — Dual 8-bit D/A converter for eye pattern display