CX84100-41/-23 SCXV.22bis Modem
V.22bis Modem with CX20493 SmartDAA®
Line Side Device
Data Sheet
Doc. No. 102339D
January 17, 2012
CX84100-41/-23 SCXV.22bis Modem Data Sheet
Revision Record
Revision
D
C
B
A
Date
1/17/2012
3/3/2004
12/9/2003
12/3/2003
Comments
Rev. D release.
Rev. C release.
Rev. B release.
Initial release.
© 2003, 2004, 2012, Conexant Systems, Inc.
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Conexant
102339D
CX84100-41/-23 SCXV.22bis Modem Data Sheet
Contents
1. Introduction .......................................................................................................................... 1-1
1.1
Overview ................................................................................................................................................... 1-1
1.2
Features .................................................................................................................................................... 1-3
1.2.1
SmartDAA Features .................................................................................................................... 1-4
1.2.2
Applications ................................................................................................................................ 1-4
1.3
Technical Overview ................................................................................................................................... 1-5
1.3.1
General Description .................................................................................................................... 1-5
1.3.2
MCU............................................................................................................................................ 1-5
1.3.3
Operating Modes ........................................................................................................................ 1-5
1.3.3.1
Data Modes ............................................................................................................... 1-5
1.3.3.2
Worldwide Operation................................................................................................. 1-5
1.3.4
Reference Design ....................................................................................................................... 1-6
1.4
Hardware Description................................................................................................................................ 1-7
1.4.1
CX84100 V.22bis Modem ........................................................................................................... 1-7
1.4.2
Digital Isolation Barrier ................................................................................................................ 1-7
1.4.3
CX20493 SmartDAA Line Side Device ....................................................................................... 1-7
1.5
Commands ................................................................................................................................................ 1-8
2. Technical Specifications....................................................................................................... 2-1
2.1
Serial DTE Interface Operation ................................................................................................................. 2-1
2.1.1
Automatic Speed/Format Sensing .............................................................................................. 2-1
2.2
Establishing Data Modem Connections .................................................................................................... 2-2
2.2.1
Dialing ......................................................................................................................................... 2-2
2.2.2
Modem Handshaking Protocol ....................................................................................................2-2
2.2.3
Call Progress Tone Detection ..................................................................................................... 2-2
2.2.4
Answer Tone Detection............................................................................................................... 2-2
2.2.5
Ring Detection ............................................................................................................................ 2-2
2.2.6
Billing Protection ......................................................................................................................... 2-2
2.2.7
Connection Speeds .................................................................................................................... 2-2
2.2.8
Automode ................................................................................................................................... 2-3
2.3
Data Mode ................................................................................................................................................ 2-3
2.3.1
Speed Buffering (Normal Mode) .................................................................................................2-3
2.3.2
Flow Control................................................................................................................................ 2-3
2.3.3
Direct Mode ................................................................................................................................ 2-3
2.3.4
Escape Sequence Detection....................................................................................................... 2-4
2.3.5
Telephone Line Monitoring ......................................................................................................... 2-4
2.3.6
Retrain ........................................................................................................................................ 2-4
2.3.7
Programmable Inactivity Timer ................................................................................................... 2-4
2.3.8
DTE Signal Monitoring (Serial DTE Interface Only) .................................................................... 2-4
2.4
Error Correction and Data Compression ................................................................................................... 2-4
2.4.1
V.42 Error Correction .................................................................................................................. 2-4
2.4.2
MNP 2-4 Error Correction ........................................................................................................... 2-4
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CX84100-41/-23 SCXV.22bis Modem Data Sheet
2.4.3
V.42 bis Data Compression ........................................................................................................ 2-5
Telephony Extensions ............................................................................................................................... 2-5
2.5.1
Line In Use Detection.................................................................................................................. 2-5
2.5.2
Extension Pickup Detection ........................................................................................................ 2-5
2.5.3
Remote Hangup Detection.......................................................................................................... 2-5
2.5.4
Digital Line Protection ................................................................................................................. 2-5
Caller ID .................................................................................................................................................... 2-6
2.6.1
Type II CID.................................................................................................................................. 2-6
Worldwide Country Support ...................................................................................................................... 2-6
Diagnostics ............................................................................................................................................... 2-7
2.8.1
Commanded Tests ..................................................................................................................... 2-7
Low Power Mode ...................................................................................................................................... 2-7
2.5
2.6
2.7
2.8
2.9
3. Hardware Interface............................................................................................................... 3-1
3.1
CX84100 V.22bis Modem Hardware Pins and Signals ............................................................................. 3-1
3.1.1
CX84100 V.22bis Modem Signal Summary ................................................................................ 3-1
3.1.1.1
CX20493 LSD Interface (Through DIB) ..................................................................... 3-1
3.1.1.2
Call Progress Speaker Interface ............................................................................... 3-1
3.1.1.3
Serial DTE Interface and Indicator Outputs ............................................................... 3-1
3.1.1.4
Control and Signals ................................................................................................... 3-1
3.1.1.5
Crystal/Clock and Power Signals .............................................................................. 3-2
3.1.2
CX84100 V.22bis Modem Pin Assignments and Signal Definitions ............................................ 3-2
3.2
CX20493 LSD 28-Pin QFN Hardware Pins and Signals ........................................................................... 3-8
3.2.1
CX20493 LSD 28-Pin QFN Signal Summary .............................................................................. 3-8
3.2.1.1
CX84100 V.22bis Modem Interface (Through DIB) ................................................... 3-8
3.2.1.2
Telephone Line Interface .......................................................................................... 3-8
3.2.1.3
Voltage References................................................................................................... 3-8
3.2.1.4
General Purpose Input/Output .................................................................................. 3-9
3.2.1.5
No Connects ............................................................................................................. 3-9
3.2.2
CX20493 LSD 28-Pin QFN Pin Assignments and Signal Definitions .......................................... 3-9
3.3
CX20493 LSD 32-Pin LQFP Hardware Pins and Signals ....................................................................... 3-13
3.3.1
CX20493 LSD 32-Pin LQFP Signal Summary .......................................................................... 3-13
3.3.1.1
CX84100 Interface (Through DIB)........................................................................... 3-13
3.3.1.2
Telephone Line Interface ........................................................................................ 3-13
3.3.1.3
Voltage References................................................................................................. 3-13
3.3.1.4
General Purpose Input/Output ................................................................................ 3-14
3.3.1.5
No Connects ...........................................................................................................3-14
3.3.2
CX20493 LSD 32-Pin LQFP Pin Assignments and Signal Definitions ...................................... 3-14
3.4
CX20493 LSD GPIO DC Electrical Characteristics ................................................................................. 3-18
3.5
Electrical and Environmental Specifications ............................................................................................ 3-19
3.5.1
Operating Conditions, Absolute Maximum Ratings, and Power Requirements ........................ 3-19
3.6
Interface Timing and Waveforms ............................................................................................................ 3-21
3.6.1.1
Serial DTE Interface ................................................................................................ 3-21
3.7
Crystal Specifications .............................................................................................................................. 3-22
4. Package Dimensions ........................................................................................................... 4-1
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CX84100-41/-23 SCXV.22bis Modem Data Sheet
Figures
Figure 1-1. SCXV.22bis Modem Simplified Interface Diagram .....................................................................1-2
Figure 1-2. SCXV.22bis Modem Major Interfaces ......................................................................................... 1-2
Figure 3-1. CX84100 V.22bis Modem Hardware Interface Signals ............................................................... 3-2
Figure 3-2. CX84100 V.22bis Modem 28-Pin TSSOP Pin Signals ............................................................... 3-3
Figure 3-3. CX20493 LSD 28-Pin QFN Hardware Interface Signals ............................................................. 3-9
Figure 3-4. CX20493 LSD 28-Pin QFN Pin Signals .................................................................................... 3-10
Figure 3-5. CX20493 LSD 32-Pin LQFP Hardware Interface Signals ......................................................... 3-14
Figure 3-6. CX20493 LSD 32-Pin LQFP Pin Signals .................................................................................. 3-15
Figure 3-7. Waveforms - Serial DTE Interface ............................................................................................ 3-21
Figure 4-1. Package Dimensions - 28-Pin TSSOP ....................................................................................... 4-2
Figure 4-2. Package Dimensions - 28-Pin QFN: Punch Style ....................................................................... 4-3
Figure 4-3. Package Dimensions - 28-Pin QFN: Sawn Style ........................................................................ 4-4
Figure 4-4. Package Dimensions - 32-Pin LQFP .......................................................................................... 4-5
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