R6764-24 Просмотр технического описания (PDF) - Conexant Systems

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R6764-24

V.90/K56flex™ PC Card Device Sets for Host-Controlled, Low Power Applications

Conexant Systems 

V.90/K56flex PC Card Device Sets for Host-Controlled, Low Power Applications

HCFL/56

Introduction (Continued from first page)

Features (Continued from first page)

S models support position independent, full-duplex speakerphone

(FDSP) operation using microphone and speaker, as well as other

voice/TAM applications using handset or headset.

Fax Group 3 send and receive rates are supported up to 14.4 kbps

with T.30 protocol.

V.80 synchronous access mode supports host-based

communication protocols, e. g., H.324 video conferencing.

Analog cellular direct connect operation is supported by licensed

firmware for specific phone types.

Accelerator kits and reference designs are available to minimize

application design time and costs.

• Full-duplex speakerphone (FDSP) mode

(S models)

− Telephone handset interface

− External microphone and speaker

interface

− Microphone gain and muting

− Speaker volume control and muting

− Adaptive acoustic, line, and handset

echo cancellation

− Loop gain control, transmit and receive

path AGC

• Data/Fax/Voice call discrimination

• Single profile stored in host

• System Compatibilities

− Windows 95, Windows 95 OSR2,

Windows 98, Windows NT 4.0,

Windows 2000 operating systems

− Microsoft’s PC 98 Design Initiative

compliant

− Unimodem/V compliant

− Pentium 133 MHz equivalent or greater

− 16 Mbyte RAM or more

• Communication software compatible AT

command sets

• NVRAM directory, stored profiles, and CIS

table (option)

• Internal phase-locked loop (PLL)

• Built-in host/DTE interface with speeds up

to 230.4 kbps

• PC Card interface supports two functions

with programmable I/O window size

• Flow control and speed buffering

• Automatic format/speed sensing

• Caller ID and distinctive ring detect

• JTAG Boundary Scan support

• Flexible PQFP and TQFP packaging

options

− L5502-11 PCMCIA BIF: 128-pin TQFP

− MDP: 144-pin TQFP or 100-PQFP

• +3.3V operation with +5V tolerant inputs

• Sleep Mode

• Power use (mW, typical):

Device

Normal

Sleep

L5502-11

165

10

MDP

250

33

Doc. No. 100586C

Conexant

3

November 10, 1999

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