Sony Ericsson GM47 Cell Phone User Manual


 
2. SYSTEM CONNECTOR INTERFACE
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LZT 123 7263 R1C
2.8.5 UART3 - TD3, RD3 (designated for future use)
UART3 is a full duplex serial communication port with transmission
and reception lines. It has the same timing and electrical signal
characteristics as UART1, TD and RD.
Transmitted Data 3 (TD3)
TD3 is used by your application to send data to the module via UART3.
Received Data 3 (RD3)
RD is used to send data to your application via UART3.
2.9 SIM Card Related Signals
These connections allow you to communicate with the SIM card holder
in you application.
Note! The distance between the SIM card holder and the module can be up to
25cm.
This SIM interface allows the use of 3V and 5V SIM cards. By default
it works on 3V levels but will automatically switch to 5V, if a 5V SIM
card is fitted.
Pin Signal Dir Description
15 SIMVCC - SIM card power supply
16 SIMPRESENCE I SIM card presence
17 SIMRST O SIM card reset
19 SIMCLK O SIM card clock
18 SIMDATA I/O SIM card data