Technical data

SYSTEM CONNECTOR INTERFACE
41
LZT 123 8020 R1A
• the radio device is reprogrammed if UART2 is connected to
a computer running Sony Ericsson update software;
• the radio device enters logging mode and sends data to
UART2 if no reprogramming information is received.
Timing and electrical signals characteristics are the same as for
UART1, TD and RD, except for maximum baud rate which
could increase to 921 kbps.
Transmitted Data 2 (TD2)
TD2 is used by the application to send data to the radio device
via UART2. It has the same electrical characteristics as TD.
Received Data 2 (RD2)
RD2 is used to send data to the application via UART2. It has
the same electrical characteristics as RD.
5.9.5 UART3 - TD3, RD3
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 radio device
via UART3.
Received Data 3 (RD3)
RD3 is used to send data to your application via UART3.
5.10 SIM Card Related Signals
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
These connections allow you to communicate with the SIM card
holder in your application.