cx20493-35/app Conexant Systems, Inc., cx20493-35/app Datasheet - Page 54

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

3.2
3.2.1
3.2.1.1
3.2.1.2
3.2.1.3
3-22
CX81801-7x/8x SmartV.XX Modem in 128-Pin LQFP with CX20493 in 32-Pin LQFP Data Sheet
CX20493 LSD Hardware Pins and Signals
CX20493 LSD Signal Summary
CX81801 Interface (Through DIB)
The DIB interface, power, and ground signals are:
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Telephone Line Interface
The telephone line interface signals are:
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Voltage References
There are three reference voltage pins:
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Clock (CLK, pin 29); input
Digital Power (PWR+, pin 8); unregulated input power
Regulated Digital Voltage Supply (DVdd, pin 28)
Digital Ground (DGnd, pin 26 and pin 27); digital ground
Regulated Analog Voltage Supply (AVdd, pin 2 and pin 3)
Analog Ground (AGnd, pin 7); analog ground
Data Positive (DIB_P, pin 30); input/output
Data Negative (DIB_N, pin 31); input/output
RING 1 AC Coupled (RAC1, pin 24); input
TIP 1 AC Coupled (TAC1, pin 23); input
RING 2 AC Coupled (RAC2, pin 22); input
TIP 2 AC Coupled (TAC2, pin 21); input
TIP and RING DC Measurement (TRDC, pin 13); input
Electronic Inductor Capacitor (EIC, pin 12)
Electronic Inductor Output (EIO, pin 20)
Electronic Inductor Feedback (EIF, pin 19)
Receive Analog Input (RXI, pin 10); input
Transmit Output (TXO, pin 15); output
Transmit Feedback (TXF, pin 14); input
Virtual Impedance 0 (VZ, pin 11); input
Electronic Inductor Ground (DC_GND, pins 1, 9, 16, 18, and 25)
Output Middle (Center) Reference Voltage (Vc, pin 4); output for decoupling
Output Reference Voltage (VRef, pin 5); output for decoupling
Bias Resistor (RBias, pin 6); input
Conexant
102247B