User Guide

NSD-5
3. System Module PAMS Technical Documentation
Page 18 Nokia Corporation Issue 1 05/02
lular PA section and switch regulator providing cellular PA driver. PA is activated discon-
tinuously in CDMA mode.
TX_LIM
Signal from RF transmitter to MAD4 pin E15 (rfTxLim) to indicate maximum allowed out-
put power is being exceeded, therefore to dynamically adjust the maximum commanded
transmitter gain in CDMA mode.
TX_LIM_ADJ
Signal from MAD4 pin D16 (mdGPPDM2) to RF transmitter to set trig point of indicator
where maximum transmit power is exceeded in CDMA.
TX_IF_AGC
Signal from MAD4 pin A15 (mdTxlfAgc) to IF VGA to control the gain of the transmit IF
section.
Signal from MAD4 pin C14 (mdTxIfAgc) to RF VGA to control the gain of the transmit RF
section. It tracks TX_IF_AGC signal with separate slope adjustment.
RIF_EN
Signal from MAD pin D2 (mdP1GPIO(2)) to RIF to enable RIF and to provide AGC refer-
ence with PDM high voltage.
High Low Polarity Rising time Filtering
Vdd - 0.6V 0 - 0.5V High: TX on
Low: TX off
< 25 ns
(10% - 90%_)
BB: RC = 1.0 x 10
-5
sec
High Low Polarity Rising time
Vdd - 0.6V 0 - 0.5V High: Power exceeded
Low: Power not exceeded
< 10 ns
Type Range Resolution
Load
impedance
Filtering
PDM 0.3V - 2.8 V 8bits @ 9.6 MHz clock 1M
BB: RC = 1.0 x 10
-4
sec
Type Range Resolution Filtering
PDM 0.3V - 2.8 V 9bits @ 9.6 MHz clock
BB: RC = 2.2 x 10
-5
sec
Type Range Resolution Filtering
PDM 0.3V - 2.5 V 8bits @ 9.6 MHz clock
BB: RC = 2.2 x 10
-5
sec