User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 62
Issue 1 07/99
As opposed to DCT3 only two signals are used for direct regulator control:
– VCXOPwr to control VCTCXO supply On/Off
– SIMCardPwr to turn SIM card supply on/off
All other regulators are controlled via the serial control bus. Which is
implemented with the 3 lines CCONTCSX for chip select, GenSIO_1 for
data and GenSIO_0 for 1.083MHz clock. The bus is a general purpose
bi–directional bus shared with the LCD–driver.
The CCONT ADC is controlled and measurements read out via the serial
bus. The ADC conversion is synchronized to the TXP signal which
indicates the Tx–burst.
When an event has occurred in the ccont , it creates an interrupt on
CCONTINT line to the MAD2PR1, which serves it and reads the event
register via the serial bus.
The SIM interface is made up of 3 lines, reset, clock and data which are
fed to the SIM card via the CCONT. Additionally The SIMCardIOC signal
controls the direction of the data line, LOW data to SIM card, High data
from SIM card.
COBBA_GJP
Cobba_GJPMAD2PR1
CobbaCLK
SerRFI_CSX
CobbaCSX
RFIClk
CSX
DSPGenOut5
Cobba reset
13MHz
CobbaSD SerRFI_SD SD
ResetX
Qdata SerRFI_Qdata Qdata
Idata SerRFI_Idata Idata
PCMTxData
PCMRxData
PCMDClk
PCMSClk 8KHz
520KHz
PCM_2
PCM_1
PCM_3
PCM_0
PData(2)
PData(3)
PData(4)
PData(1)
PData(0)
n/c
TP J349
UISwitchLCD_light
V202
KEY_Light
Figure 18. Digital Interface – COBBA_GJP and MAD2PR1