DS96-L147-203 CONEXANT [Conexant Systems, Inc], DS96-L147-203 Datasheet - Page 33
DS96-L147-203
Manufacturer Part Number
DS96-L147-203
Description
SmartV.XX Modem
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.DS96-L147-203.pdf
(94 pages)
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3.
3.1
3.1.1
3.1.1.1
3.1.1.2
3.1.1.3
3.1.1.4
102199B
Hardware Interface
CX81801 Modem Hardware Pins and Signals
Common to Parallel and Serial Interface Configurations
LSD Interface (Through DIB)
The DIB interface signals are:
•
•
•
•
Call Progress Speaker Interface
The call progress speaker interface signal is:
•
DSPKOUT is a square wave output in Data/Fax mode used for call progress or carrier
monitoring. This output can be optionally connected to a low-cost on-board speaker, e.g.,
a sounducer, or to an analog speaker circuit.
Voice Relay Interface (S Models)
The voice relay interface signal is:
•
Serial EEPROM Interface
A 2-line serial interface to an optional serial EEPROM is supported. The interface signals
are:
•
•
The EEPROM can hold information such as firmware customization, and country code
parameters. Data stored in EEPROM takes precedence over the factory default settings.
Note: This information is usually stored in flash ROM; serial EEPROM is required only
if storage is required for more than 31 country profiles.
The EEPROM size can range from 2 Kb (256 x 8) to 256 Kb (32K x 8). A 2 Kb
EEPROM must be 100 kHz or 400 kHz; higher capacity EEPROMs must be 400 kHz.
Clock and Power Positive (PWRCLKP); output
Clock and Power Negative (PWRCLKN); output
Data Positive (DIB_DATAP); input/output
Data Negative (DIB_DATAN); input/output
Digital speaker output (DSPKOUT); output
Voice Relay Control (VOICE#); output
Bidirectional Data input/output (NVMDATA)
Clock output (NVMCLK)
CX81801-7x/8x SmartV.XX Modem Data Sheet
Conexant
3-1
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