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CX20442 View Datasheet(PDF) - Conexant Systems

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CX20442 Datasheet PDF : 94 Pages
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CX81801-7x/8x SmartV.XX Modem Data Sheet
Figure 1-1. SmartV.XX Modem Simplified Interface Diagram
PARALLEL
HOST BUS OR
SERIAL DTE
INTERFACE
CX81801
Modem
128-Pin TQFP
Digital
Isolation
Barrier
(DIB)
Figure 1-2. SmartV.XX Modem Major Interfaces
CX20493
SmartDAA
Line Side
Device (LSD)
28-Pin QFN
CX20442
Voice Codec
(VC)
32-Pin TQFP
(Optional)
Telephone
Line
Interface
Discrete
Components
TIP
RING
TIP
RING
TELEPHONE LINE
HANDSET (OPTIONAL)
MIC
(OPTIONAL)
SPEAKER
102199_001
CX81801 Modem
128-Pin TQFP
SmartDAA
Interface
Digital
Isolation
Barrier (DIB)
Components
Rectifier
and Filter
Components
DAA Hardware
CX20493 SmartDAA
Line Side Device (LSD)
28-Pin QFN
Line
Side
DIB
Interface
(LSDI)
Codec
Telephone
Line
Interface
Paralle Host
or Serial DTE
Interface
Microcontroller
Unit (MCU)
Modem Data
Pump (MDP)
CX20442
Voice Codec (VC)
32-Pin TQFP
(Optional)
RAM
(32K x 8)
ROM
(256k x 8)
Serial EEPROM
2K (256 x 8) to
256K (32K x 8)
(Optional)
Optional RAM
Up to 1M (128K x 8)
Optional Flash ROM
Up to 4M (512K x 8)
Telephone
Line Interface
Discrete
Components
Voice Relay,
HS Pickup
Detector
(Optional)
HS Hybrid
Components
(Optional)
(Mic/Speaker)
Interface
(Optional)
Digital Speaker
Circuit (Optional)
TELEPHONE
LINE
TIP
RING
TELEPHONE
HANDSET
TIP
RING
MIC
SPEAKER
SOUNDUCER
102199B
Conexant
102199_002
1-3
 

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