10 sim card related signals, Sim card related signals – Sony Ericsson GR47/GR48 User Manual
Page 40
5. SYSTEM CONNECTOR INTERFACE
40
LZT 123 7589 R1A
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
These connections allow you to communicate with the SIM card holder in
your application.
1RWH
The distance between the SIM card holder and the radio device can be up
to 25cm.
This SIM interface allows the use of 3 V and 5 V SIM cards. By default it
works on 3 V levels but will automatically switch to 5 V, if a 5 V SIM card
is fitted.
SIM voltage levels, as shown in the following table, are dependent on the
type of SIM card detected by the radio device.
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
Signal
Parameter
Mode
Min.
Typ.
Max.
Unit
SIMVCC
SIM supply voltage
3 V
2.7
3.0
3.3
V
5 V
4.5
5.0
5.5
V
SIMDAT
High Level Input
voltage (V
,+
)
3 V
2.1
3.0
V
5 V
3.5
5.0
V
SIMDAT
Low Level Input
voltage (V
,/
)
3 V
0
0.9
V
5 V
0
1.5
V