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Copyright 2005© Siemens AG
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Service Repair Documentation
Level 2.5e – C75
Release 1.0
SSC interface
The SSC interface enables high-speed synchronous data transfer between SGOLD and
ASIC.
The interface consist of: clock signal (PM_SSC_SCLK), master transmit slave receive
(PM_SSC_MTSR), master receive slave transmit (PM_SSC_MTSR) and the select line
(PM_SSC_CS)
IS2 interface
The audio interface is a bidirectional serial interface, TX and RX part are independent. The
IS2 interface consist of a three wire connection for each direction. The three lines are clock
(CLK), the serial data line (DAC or ADC) and the word select line (WAO). Clock and word
select line is used for RX and TX together in SL65. (PM_I2S_DAC for RX and PM_I2S_ADC
for TX)
7.1.2.11 LDO`S
LDO´s: Voltage Current Name voltage domains
REG 1 2,9V
0...140mA 2.9V Display, Epson Camera-Chip, SGOLD
REG 2a 1,5V
0...300mA 1.5V_UC SGOLD
REG 2b 1,5V
0...100mA 1.5V_DSP SGOLD
REG 3 2,65V
0...140mA 2.65V SGOLD, Hall-Sensor, Epson Camera-Chip,
USB Switch
MEM REG1 1,8V
0...250mA 1.8V_MEM1 SGOLD, Display, SDRAM
MEM REG2 1,8V
0...150mA 1.8V_MEM2 Flash Memory, Camera-ASIC
AUDIO REG 2,9V
0...190mA VAUDREGA PMU ASIC
RF REG1 2,7V
0...150mA VDD_RF1 RF-Part (Hitachi Bright V)
AFC REG 2,65V
0...2mA VDD_AFC SGOLD
LP_REG 2,0V
0...2mA VDD_RTC SGOLD
SIM REG 2,9V
0...70mA VDD_SIM SIM
USB REG 3,1V
0...40mA VDD_USB SGOLD, USB Protection
VIBRA 2,8V
0...140mA VDD_VIBRA VIBRA
8 Illumination
a) Keyboard
The Keyboard will be realized via a separate PCB which will be connected to the main PCB
via board-to-board connector with 12 interconnections. The illumination of the keypad will be
done via 6 high-brightness LEDs (colour: white, type: top-shooter, driven by 5 mA / LED).
b) Display
The 4 serial LEDs for the display are supplied by one constant current source, to ensure the
same brigthness and colour of the white backlight.
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