User Guide

NSD-5
3. System Module PAMS Technical Documentation
Page 20 Nokia Corporation Issue 1 05/02
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Figure 10: CAFE module block diagram
Detailed Module Description
CDMA Mode
When the phone is in CDMA mode, I and Q components of the received IF signals from
RIF are differentially AC coupled to CAFE ASIC. The input signal levels, impedance, and
capacitance are described in Reference 3. For more information, refer to that document.
The received signals are A/D converted to 4-bit digital signals inside the CAFE ASIC and
then are sent to the MAD4 ASIC through data bus RXD[11:0]. The 4-bit in-phase compo-