NSW-6
System Module SE2
PAMS Technical Documentation
Page 31
Issue 1 12/99
Nokia Mobile Phones Ltd.
by the CHAPS when the main battery voltage is over 3.2V. The charging
current is 200uA (nominal).
Operating mode
Vref
RF REG
VCOB-
BA
VBB
VSIM
SIMIF
Power off
Off
Off
Off
Off
Off
Pull
down
Power on
On
On/Off
On
On
On
On/Off
Reset
On
Off
VR1 On
On
On
Off
Pull
down
Sleep
On
Off
On
On
On
On/Off
Note: CCONT includes also five additional 2.8V regulators providing power to the RF
section. These regulators can be controlled either by the direct control signals from MAD
or by the RF regulator control register in CCONT which MAD can update. Below are the
listed the MAD control lines and the regulators they are controlling.
–
TxPwr controls VTX regulator (VR5)
–
RxPwr controls VRX regulator (VR2)
–
SynthPwr controls VSYN_1 and VSYN_2 regulators (VR4 and VR3)
–
VCXOPwr controls VXO regulator (VR1)
CCONT generates also a 1.5 V reference voltage VREF to COBBA and
EROTUS. The VREF voltage is also used as a reference to the CCONT
A/D converter.
In addition to the above mentioned signals MAD includes also TXP control
signal which goes to PLUSSA power control block and to the power
amplifier. The transmitter power control TXC is led from COBBA to
PLUSSA.
Audio Control
The audio control and processing is taken care by the COBBA_D, which
contains the audio and RF codecs, and the MAD1, which contains the
MCU, ASIC and DSP blocks handling and processing the audio signals.
