Motorola D10 Service Manual page 75

BenQ
3.13 Rader circuit
ULYSSE
SIM_IO
SIM_CLK
SIM_RST
Description
The SIM follows the GSM and ISO specifications and works in 3
volts or in 5 volts with a minimum external logic.
SIM_IO(I/O): Data
SIM_RST(O): Reset signal
SIM_CLK(O): Clock (1.6MHz/3.2MHz)
The SIM card digital interface insures the translation of logic levels
between ULYSSE and SIM card. There is a level shifter embedded in
Omega to support 5V SIM card.
SVDD
OMEGA
SIO3
SCLK3 SCLK5
SRST3 SRST5
34
Rev 1.0
VCC/VPP
SIM
SOCKET
SIO5 I/O
CLK
RST
GND