L2800-38

Product Summary

The L2800-38 is an 8-Bit Microcontroller. It supports data/fax, voice/TAM/telephony extensions, V.80 synchronous access mode, host-DSVD, and optional speakerphone, AudioSpan, and on-board DSVD functions depending upon model. The L2800-38 is designed to operate with dial-up telephone lines in the U.S. and world-wide. The L2800-38 set consists of an 8-bit microcontroller (MCU) in an 80-pin PQFP, a modem data pump (MDP) in a 100-pin PQFP, and an optional Plug and Play (PnP) ISA Bus Interface Device in 80-pin PQFP.

Parametrics

L2800-38 absolute maximum ratings: (1)Supply Voltage:MCU: -0.5 to +6.0V, MDP: -0.5 to +4.0V; (2)Input Voltage:-0.5 to (VDD +0.5) V; (3)Operating Temperature Range:-0℃ to +70℃; (4)Storage Temperature Range:-55℃ to +125℃; (5)Analog Inputs:-0.3 to (VAA + 0.3) V; (6)Voltage Applied to Outputs in High Impedance (Off) State:-0.5 to (VDD + 0.5) V; (7)DC Input Clamp Current:±20 mA; (8)DC Output Clamp Current:±20 mA; (9)Static Discharge Voltage (25℃):±2500 V; (10)Latch-up Current:±400 mA.

Features

L2800-38 features: (1)ITU-T V.90 and K56flex (RC56 models); (2)V.34 (33.6 kbps) (RC56 and RC336 models); (3)V.32 bis, V.32, V.22 bis, V.22, V.23, and V.21; (4)Bell 212A and 103; (5)V.42 LAPM, MNP 2-4, and MNP 10 error correction; (6)V.42 bis and MNP 5 data compression; (7)MNP 10EC enhanced cellular performance; (8)Call progress; (9)Blacklisting; (10)Multiple country support; (11)Acoustic and line echo cancellation; (12)Microphone gain and muting; (13)Speaker volume control and muting; (14)ITU-T interoperable G.729 and G.729 Annex A with interoperable G.729 Annex B; (15)Voice/silence detection and handset echo cancellation; (16)Robust DSVD timing recovery; (17)Handset, headset, or half-duplex speakerphone; (18)Host-based DSVD support with V.70 software drivers for Windows 95; (19)Communication software compatible AT command sets; (20)NVRAM directory and stored profiles; (21)Flash memory support; (22)Internal phase-locked loop (PLL).

Diagrams