CX81801 datasheet, PDF - EEWORLD Datasheet

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CX81801: Descriptionsmartv.XX modem; CategoryWireless rf/communication Telecom circuit; File Size539KB，94 Pages; ManufacturerCONEXANT; Websitehttp://www.conexant.com/

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CX81801 Overview

smartv.XX modem

CX81801 Parametric

Parameter Name	Attribute value
package instruction	,
Reach Compliance Code	compliant
Base Number Matches	1

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CX81801-7x/8x SmartV.XX Modem Data Sheet

Contents

1. Introduction..........................................................................................................................................1-1

1.1

1.2

1.3

Overview ......................................................................................................................................................................... 1-1

Applications .................................................................................................................................................................... 1-2

Features .......................................................................................................................................................................... 1-4

1.3.1

General Modem Features................................................................................................................................ 1-4

1.3.2

SmartDAA Features ........................................................................................................................................ 1-5

1.3.3

Applications.................................................................................................................................................... 1-5

Technical Overview......................................................................................................................................................... 1-6

1.4.1

General Description ........................................................................................................................................ 1-6

1.4.2

MCU Firmware................................................................................................................................................ 1-6

1.4.3

Operating Modes ............................................................................................................................................ 1-6

1.4.3.1

Data/Fax Modes.......................................................................................................................... 1-6

1.4.3.2

V.44 Data Compression.............................................................................................................. 1-7

1.4.3.3

Worldwide Operation.................................................................................................................. 1-7

1.4.3.4

TAM Mode.................................................................................................................................. 1-8

1.4.3.5

Speakerphone Mode (S Models)................................................................................................ 1-9

1.4.4

Reference Designs.......................................................................................................................................... 1-9

Hardware Description ..................................................................................................................................................... 1-9

1.5.1

CX81801 Modem Device ................................................................................................................................ 1-9

1.5.2

Digital Isolation Barrier................................................................................................................................. 1-10

1.5.3

CX20493 SmartDAA Line Side Device.......................................................................................................... 1-10

1.5.4

CX20442 Voice Codec .................................................................................................................................. 1-10

AT Commands .............................................................................................................................................................. 1-10

Serial DTE Interface Operation........................................................................................................................................ 2-1

2.1.1

Automatic Speed/Format Sensing .................................................................................................................. 2-1

Parallel Host Bus Interface Operation............................................................................................................................. 2-2

Establishing Data Modem Connections .......................................................................................................................... 2-2

2.3.1

Dialing ............................................................................................................................................................ 2-2

2.3.2

Telephone Number Directory.......................................................................................................................... 2-2

2.3.3

Modem Handshaking Protocol ....................................................................................................................... 2-2

2.3.4

Call Progress Tone Detection ......................................................................................................................... 2-2

2.3.5

Answer Tone Detection................................................................................................................................... 2-2

2.3.6

Ring Detection................................................................................................................................................ 2-2

2.3.7

Billing Protection ............................................................................................................................................ 2-3

2.3.8

Connection Speeds......................................................................................................................................... 2-3

2.3.9

Automode ....................................................................................................................................................... 2-3

Data Mode ...................................................................................................................................................................... 2-4

1.4

1.5

1.6

2.1

2.2

2.3

2. Technical Specifications .......................................................................................................................2-1

2.4

102199B

Conexant

iii

CX81801-7x/8x SmartV.XX Modem Data Sheet

2.4.1

Speed Buffering (Normal Mode) .................................................................................................................... 2-4

2.4.2

Flow Control ................................................................................................................................................... 2-4

2.4.3

Escape Sequence Detection............................................................................................................................ 2-4

2.4.4

BREAK Detection ............................................................................................................................................ 2-4

2.4.5

Telephone Line Monitoring............................................................................................................................. 2-4

2.4.6

Fall Forward/Fallback (V.92/V.90/V.34/V.32 bis/V.32) ................................................................................... 2-4

2.4.7

Retrain ............................................................................................................................................................ 2-5

2.4.8

Programmable Inactivity Timer ...................................................................................................................... 2-5

2.4.9

DTE Signal Monitoring (Serial DTE Interface Only) ........................................................................................ 2-5

V.92 Features.................................................................................................................................................................. 2-5

2.5.1

Modem-on-Hold ............................................................................................................................................. 2-5

2.5.2

Quick Connect ................................................................................................................................................ 2-6

2.5.3

PCM Upstream ............................................................................................................................................... 2-6

Error Correction and Data Compression......................................................................................................................... 2-6

2.6.1

V.42 Error Correction ..................................................................................................................................... 2-6

2.6.2

MNP 2-4 Error Correction .............................................................................................................................. 2-6

2.6.3

V.44 Data Compression.................................................................................................................................. 2-6

2.6.4

V.42 bis Data Compression ............................................................................................................................ 2-6

2.6.5

MNP 5 Data Compression .............................................................................................................................. 2-7

Telephony Extensions..................................................................................................................................................... 2-7

2.7.1

Line In Use Detection ..................................................................................................................................... 2-7

2.7.2

Extension Pickup Detection ............................................................................................................................ 2-7

2.7.3

Remote Hangup Detection.............................................................................................................................. 2-8

Fax Class 1 and Fax Class 1.0 Operation ........................................................................................................................ 2-8

Point-of-Sales Support ................................................................................................................................................... 2-8

Voice/Audio Mode .......................................................................................................................................................... 2-8

2.10.1

Online Voice Command Mode ........................................................................................................................ 2-8

2.10.2

Voice Receive Mode ....................................................................................................................................... 2-8

2.10.3

Voice Transmit Mode ..................................................................................................................................... 2-9

2.10.4

Full-Duplex Receive and Transmit Mode ........................................................................................................ 2-9

2.10.5

Audio Mode .................................................................................................................................................... 2-9

2.10.6

Tone Detectors ............................................................................................................................................... 2-9

2.10.7

Speakerphone Mode....................................................................................................................................... 2-9

V.80 Synchronous Access Mode (SAM) - Video Conferencing...................................................................................... 2-9

Full-Duplex Speakerphone (FDSP) Mode (S Models)................................................................................................... 2-10

Caller ID ........................................................................................................................................................................ 2-10

Worldwide Country Support ......................................................................................................................................... 2-10

Diagnostics ................................................................................................................................................................... 2-11

2.15.1

Commanded Tests........................................................................................................................................ 2-11

2.15.2

Power On Reset Tests .................................................................................................................................. 2-11

Low Power Sleep Mode ................................................................................................................................................ 2-12

CX81801 Modem Hardware Pins and Signals ................................................................................................................ 3-1

3.1.1

Common to Parallel and Serial Interface Configurations................................................................................ 3-1

3.1.1.1

LSD Interface (Through DIB)...................................................................................................... 3-1

3.1.1.2

Call Progress Speaker Interface ................................................................................................. 3-1

3.1.1.3

Voice Relay Interface (S Models) ............................................................................................... 3-1

3.1.1.4

Serial EEPROM Interface............................................................................................................ 3-1

3.1.1.5

External Bus Interface ................................................................................................................ 3-2

2.5

2.6

2.7

2.8

2.9

2.10

2.11

2.12

2.13

2.14

2.15

2.16

3.1

3. Hardware Interface ...............................................................................................................................3-1

Conexant

102199B

CX81801-7x/8x SmartV.XX Modem Data Sheet

3.1.2

Serial Interface Configuration Only................................................................................................................. 3-2

3.1.2.1

Serial DTE Interface and Indicator Outputs (PARIF = Low)........................................................ 3-2

3.1.3

Parallel Interface Configuration Only (PARIF = High)..................................................................................... 3-3

3.1.3.1

Parallel Host Bus Interface ......................................................................................................... 3-3

3.1.4

CX81801 Modem Interface Signals................................................................................................................ 3-3

CX20493 LSD Hardware Pins and Signals ................................................................................................................... 3-22

3.2.1

CX20493 LSD Signal Summary.................................................................................................................... 3-22

3.2.1.1

Smart Modem Interface (Through DIB) ................................................................................... 3-22

3.2.1.2

Telephone Line Interface .......................................................................................................... 3-22

3.2.1.3

Voltage References................................................................................................................... 3-22

3.2.1.4

General Purpose Input/Output.................................................................................................. 3-23

3.2.1.5

No Connects ............................................................................................................................. 3-23

3.2.2

CX20493 LSD Pin Assignments and Signal Definitions ............................................................................... 3-23

CX20442 VC Hardware Pins and Signals (S Models)................................................................................................... 3-28

3.3.1

CX20442 VC Signal Summary...................................................................................................................... 3-28

3.3.1.1

Speakerphone Interface............................................................................................................ 3-28

3.3.1.2

Telephone Handset/Headset Interface...................................................................................... 3-28

3.3.1.3

CX81801 Modem Interface....................................................................................................... 3-28

3.3.1.4

Host Interface........................................................................................................................... 3-28

3.3.2

CX20442 VC Pin Assignments and Signal Definitions ................................................................................. 3-29

Electrical and Environmental Specifications ................................................................................................................. 3-35

3.4.1

Operating Conditions, Absolute Maximum Ratings, and Power Requirements ........................................... 3-35

3.4.2

Interface and Timing Waveforms ................................................................................................................. 3-37

3.4.2.1

External Memory Bus Timing ................................................................................................... 3-37

3.4.2.2

Parallel Host Bus Timing .......................................................................................................... 3-39

3.4.2.3

Serial DTE Interface.................................................................................................................. 3-41

Crystal Specifications ................................................................................................................................................... 3-42

3.2

3.3

3.4

3.5

4. Package Dimensions ............................................................................................................................4-1

5. Parallel Host Interface ..........................................................................................................................5-1

5.1

5.2

Overview ......................................................................................................................................................................... 5-1

Register Signal Definitions ............................................................................................................................................. 5-3

5.2.1

IER - Interrupt Enable Register (Addr = 1, DLAB = 0) .................................................................................... 5-3

5.2.2

FCR - FIFO Control Register (Addr = 2, Write Only) ....................................................................................... 5-4

5.2.3

IIR - Interrupt Identifier Register (Addr = 2) .................................................................................................. 5-5

5.2.4

LCR - Line Control Register (Addr = 3) .......................................................................................................... 5-6

5.2.5

MCR - Modem Control Register (Addr = 4).................................................................................................... 5-7

5.2.6

LSR - Line Status Register (Addr = 5)............................................................................................................ 5-7

5.2.7

MSR - Modem Status Register (Addr = 6) ..................................................................................................... 5-9

5.2.8

RBR - RX Buffer (Receiver Buffer Register) (Addr = 0, DLAB = 0) ................................................................ 5-9

5.2.9

THR - TX Buffer (Transmitter Holding Register) (Addr = 0, DLAB = 0).......................................................... 5-9

5.2.10

Divisor Registers (Addr = 0 and 1, DLAB = 1).............................................................................................. 5-10

Receiver FIFO Interrupt Operation ................................................................................................................................ 5-10

5.3.1

Receiver Data Available Interrupt ................................................................................................................. 5-10

5.3.2

Receiver Character Timeout Interrupts......................................................................................................... 5-11

Transmitter FIFO Interrupt Operation ........................................................................................................................... 5-11

5.4.1

Transmitter Empty Interrupt......................................................................................................................... 5-11

5.3

5.4

102199B

Conexant

CX81801 Related Products

	CX81801	CX81801-73	CX81801-72	CX81801-74	CX81801-7x	CX81801-82	CX81801-84	CX81801-83	CX81801-8x
Description	smartv.XX modem	smartv.XX modem	smartv.XX modem	smartv.XX modem	smartv.XX modem	smartv.XX modem	smartv.XX modem	smartv.XX modem	smartv.XX modem
package instruction	,	LFQFP, QFP128,.63X.87,20	LFQFP, QFP128,.63X.87,20	LFQFP, QFP128,.63X.87,20	-	LFQFP, QFP128,.63X.87,20	LFQFP, QFP128,.63X.87,20	LFQFP, QFP128,.63X.87,20	-
Reach Compliance Code	compliant	unknown	unknown	unknown	-	compliant	compliant	compliant	-
Base Number Matches	1	1	1	1	-	1	-	1	-
Is it Rohs certified?	-	incompatible	incompatible	incompatible	-	incompatible	incompatible	incompatible	-
Parts packaging code	-	QFP	QFP	QFP	-	QFP	QFP	QFP	-
Contacts	-	128	128	128	-	128	128	128	-
data rate	-	56 Mbps	56 Mbps	56 Mbps	-	56 Mbps	56 Mbps	56 Mbps	-
Fax rate	-	14.4 kbps	14.4 kbps	14.4 kbps	-	14.4 kbps	14.4 kbps	14.4 kbps	-
JESD-30 code	-	R-PQFP-G128	R-PQFP-G128	R-PQFP-G128	-	R-PQFP-G128	R-PQFP-G128	R-PQFP-G128	-
JESD-609 code	-	e0	e0	e0	-	e0	e0	e0	-
length	-	20 mm	20 mm	20 mm	-	20 mm	20 mm	20 mm	-
Number of functions	-	1	1	1	-	1	1	1	-
Number of terminals	-	128	128	128	-	128	128	128	-
Maximum operating temperature	-	70 °C	70 °C	70 °C	-	70 °C	70 °C	70 °C	-
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-
encapsulated code	-	LFQFP	LFQFP	LFQFP	-	LFQFP	LFQFP	LFQFP	-
Encapsulate equivalent code	-	QFP128,.63X.87,20	QFP128,.63X.87,20	QFP128,.63X.87,20	-	QFP128,.63X.87,20	QFP128,.63X.87,20	QFP128,.63X.87,20	-
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	-
Package form	-	FLATPACK, LOW PROFILE, FINE PITCH	FLATPACK, LOW PROFILE, FINE PITCH	FLATPACK, LOW PROFILE, FINE PITCH	-	FLATPACK, LOW PROFILE, FINE PITCH	FLATPACK, LOW PROFILE, FINE PITCH	FLATPACK, LOW PROFILE, FINE PITCH	-
power supply	-	3.3 V	3.3 V	3.3 V	-	3.3 V	3.3 V	3.3 V	-
Certification status	-	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	-
Maximum seat height	-	1.6 mm	1.6 mm	1.6 mm	-	1.6 mm	1.6 mm	1.6 mm	-
Nominal supply voltage	-	3.3 V	3.3 V	3.3 V	-	3.3 V	3.3 V	3.3 V	-
surface mount	-	YES	YES	YES	-	YES	YES	YES	-
technology	-	CMOS	CMOS	CMOS	-	CMOS	CMOS	CMOS	-
Telecom integrated circuit types	-	MODEM-SUPPORT CIRCUIT	MODEM-SUPPORT CIRCUIT	MODEM-SUPPORT CIRCUIT	-	MODEM-SUPPORT CIRCUIT	MODEM-SUPPORT CIRCUIT	MODEM-SUPPORT CIRCUIT	-
Temperature level	-	COMMERCIAL	COMMERCIAL	COMMERCIAL	-	COMMERCIAL	COMMERCIAL	COMMERCIAL	-
Terminal surface	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-
Terminal form	-	GULL WING	GULL WING	GULL WING	-	GULL WING	GULL WING	GULL WING	-
Terminal pitch	-	0.5 mm	0.5 mm	0.5 mm	-	0.5 mm	0.5 mm	0.5 mm	-
Terminal location	-	QUAD	QUAD	QUAD	-	QUAD	QUAD	QUAD	-
width	-	14 mm	14 mm	14 mm	-	14 mm	14 mm	14 mm	-

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