CX81801 Datasheet, PDF (1/2 Pages) Conexant Systems, Inc – Serial/Parallel Modem with 3rd

Embeded Dial-Up Modems
Controller-Based Modems
Serial/Parallel Modem with 3rd Generation
SmartDAA and Speakerphone Support
CX81801
Controller-Based Modem with SmartDAA^® 3
for Embedded Applications
Conexant’s broadband communications portfolio includes a comprehensive suite
of semiconductor solutions that enable the digital home and information network.
The Conexant CX81801 modem is ideal for embedded applications such as POS
Terminals, Set-Top Boxes, Video Recorders, Metering, Security, Remote Site
Management and any other application that requires robust dial-up connectivity.
The device set integrates the micro controller, digital signal processor, memory and a
worldwide DAA/telephone line interface function that operates with PSTN telephone
lines worldwide.
The CX81801 modem supports data/fax/Telephone Answering Machine (TAM)
with up to 56 kbps analog data and 14.4 kbps fax modem operation. The V.92 modem
includes V.92 features such as Quick Connect, Modem-on-Hold^™ and
PCM Upstream. The modem device is also available in V.34 and V.32bis options.
The CX81801 modem device set consists of a CX81801 modem in either a 128-pin
TQFP or 28-pin CTLGA package, and a Line Side Device (LSD). The CX81801 128-pin
TQFP supports either the SmartDAA 3 LSD (CX20493 28-pin QFN) or the SmartDAA
(CX20463 32-pin TQFP). The SmartDAA 3 requires fewer discrete components for a
low-cost solution. The CX81801 128-pin TQFP supports serial and parallel interface and
optional full-duplex speakerphone. The CX81801 Modem in a 28-pin CTLGA supports
SmartDAA 3 LSD (CX20493 28-pin QFN). This device targets applications that require
the smallest possible dimensions. The CTLGA package has the same footprint as a
TSSOP package. The CX81801 28-pin CTLGA supports a serial interface.
Serial DTE
Interface
or
Parallel
Host Bus
(128 TQFP
only)
Cx81801
Smart Modem
28-pin CTlgA
or
128-Pin TQfP
Digital
Isolation
Barrier
(DIB)
Cx20493
(28-Pin QfN)
SmartDAA
line Side Device
(lSD)
Cx20442
voice Codec (vC)
32-Pin TQfP
(optional for
128 TQfP only)
Telephone
Line Interface
Discrete
Components
Tip
Ring
Tip
Ring
Telephone
Line
Handset
(Optional)
Mic
Speaker
(Optional)
CX81801 Modem Block Diagram
Distinguishing Features
• V.92, V.34 and V.32bis options
- V .92 includes Modem-on-Hold^™,
Quick Connect, and PCM Upstream
• Fax modem send and receive rates
up to 14.4 kbps
• FastPOS (V.29) and V.22 fast connect
• V.44/V.42bis and MNP5 data compression
• V.42 and MNP2-4 error correction
• 128-pin TQFP package available
- S erial or parallel interface
- O ptional full-duplex speakerphone
- S martDAA 3 or SmartDAA option
• 28-pin CTLGA package available
- S erial interface
- P in-compatible with CX84100 V.22bis modem
- S mall form-factor
- S martDAA 3
• SmartDAA 3
- L ine-in-use detection
- D igital Line Guard (programmable)
- E xtension Pick-up detection
- R emote Hang-up detection
• Worldwide support
• Quick time-to-market
• Low-cost solution
• Optional Pb-free devices available
Part Number CX81801
Description Serial/Parallel Modem with 3rd
Generation SmartDAA and Speakerphone
Support