User Guide

PAMS Technical Documentation 3. System Module
NSD-5
Issue 1 05/02 Nokia Corporation Page 57
RF Regulators
Regulators CCONT, CHAPS Comments
CCONT
VR1 Synth block - VCTCXO supply no change
VR2 Rx block Alfred. Needs to be switch on 5 ms
(minimum delay) after PLL (UHF-RX) pro-
gramming. Turn off sequence for VR2 and
VR3 remains same. RIF moved from VR3 to
VR2.
default set to nonslotted mode
upon phone power-up
VR3 Rx block: RX VHF Synth block: PLL, UHF VCO
VR4 Tx block: TX RFA (discrete) and attenauator Puncturing should remain the
same. Note: puncture input is Ored
with regulator control bit to turn
on/off regulator.
VR5 Tx block: Tx IFA (discrete) and mixer Puncturing is required (same time
as VR4).
VR6 CAFE no change
VR7 TIF, UHF LO buffer, TX VHF VCO no change
Receiver Block
Front-end Alfred, RX_GS (gain switch port remains).
VRegP5 not used. RFSLE2 not used.
RxBoost(GPPDM4) not used. Boost mode is
not used. High gain mode ensures enough
linearity.
Power-up sequence for Alfred
requires LO stabilized. LNA switch
point will be changed (eeprom set-
ting).
RIF RIF inputs (wrt RIF): Mode select, Outputs:
LIM_P, LIM_N RIF and RSSI not required
Band_Sel and Mode_Sel can be
removed in SW if desired.
TX Block
TIF Mode_select, Band Select (input wrt RIF)
not required. Set in HW Filt_Sel_P: GPPDM3
as in Santra and Filt_Sel_N: GPPDM4
(Boost) on Santrai inverted control. Order of
switching and timing does not matter.
RF_TX_Gate_C (cellband) not
required.
Synthesizer Block
PLL IC Syn_LK1(output wrt PLL) and
Syn_ACQ&SYN_PWR_DN(input wrt PLL) not
used.
Free-up P1GPO4 (Syn_acq and
Synth Power down) and P1GPO3
(Syn_Lk1)
UI CAFE Block
Accessories detection Different PnP Pick up from Leo+
LCD Block
pick up from Leo+