cx20493-35/app Conexant Systems, Inc., cx20493-35/app Datasheet - Page 60

• Manufacturer Part Number: cx20493-35/app
• Description: With Cx20493 Smartdaa?
• Manufacturer: Conexant Systems, Inc.

3.3
3.3.1
3.3.1.1
3.3.1.2
3.3.1.3
3.3.1.4
3-28
CX81801-7x/8x SmartV.XX Modem in 128-Pin LQFP with CX20493 in 32-Pin LQFP Data Sheet
CX20442 VC Hardware Pins and Signals (S Models)
CX20442 VC Signal Summary
Microphone and analog speaker interface signals, as well as telephone handset/headset
interface signals are provided to support functions such as speakerphone mode, telephone
emulation, microphone voice record, speaker voice playback, and call progress monitor.
Speakerphone Interface
The following signals are supported:
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•
Telephone Handset/Headset Interface
The following interface signals are supported:
•
•
•
CX81801 Modem Interface
The following interface signals are supported:
•
•
•
•
•
•
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Host Interface
The following interface signals are supported:
•
Speaker Out (M_SPKR_OUT); analog output - Should be used in speakerphone
designs where sound quality is important
Microphone (M_MIC_IN); analog input
Telephone Input (M_LINE_IN), input (TELIN) - Optional connection to a telephone
handset interface circuit
Telephone output (M_LINE_OUTP); output (TELOUT) - Optional connection to a
telephone handset interface circuit
Center Voltage (VC); output reference voltage
Sleep (SLEEP); input
Master Clock (M_CLKIN); input
Serial Clock (M_SCK); output
Control (M_CNTRLSIN); input
Serial Frame Sync (M_STROBE); output
Serial Transmit Data (M_TXSIN); input
Serial Receive Data (M_RXOUT); output
Reset (POR); input
Conexant
102247B