CX81801-74 datasheet, PDF - EEWORLD Datasheet

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CX81801-74: Descriptionsmartv.XX modem; CategoryWireless rf/communication Telecom circuit; File Size539KB，94 Pages; ManufacturerCONEXANT; Websitehttp://www.conexant.com/

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CX81801-74 Overview

smartv.XX modem

CX81801-74 Parametric

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

CX81801-74 Related Products

	CX81801-74	CX81801	CX81801-73	CX81801-72	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
Is it Rohs certified?	incompatible	-	incompatible	incompatible	-	incompatible	incompatible	incompatible	-
Parts packaging code	QFP	-	QFP	QFP	-	QFP	QFP	QFP	-
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	-
Contacts	128	-	128	128	-	128	128	128	-
Reach Compliance Code	unknown	compliant	unknown	unknown	-	compliant	compliant	compliant	-
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	-
Base Number Matches	1	1	1	1	-	1	-	1	-

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