Table of Contents
Advertisement
UART0_TXD
UART0_RTS
UART0_RXD
UART0_CTS
GND
Module
NOTE
UART2 and debug UART are similar to UART0. For reference designs of the two UARTs, refer to that of
UART0.
4.3. (U)SIM Interfaces
The (U)SIM interfaces meet ETSI and IMT-2000 requirements. Either 1.8 V or 2.95 V (U)SIM card is
supported. Dual SIM Dual Standby is supported by software by default.
Table 13: Pin Definition of (U)SIM Interfaces
Pin Name
USIM2_VDD
USIM2_DATA
USIM2_CLK
USIM2_RST
USIM2_DET
SC200K_Series_Hardware_Design
1.85 V
OE
VCCA
VCCB
TXD_3.3V
TXD_1.85V
RTS_3.3V
RTS_1.85V
RXD_1.85V
RXD_3.3V
CTS_1.85V
CTS_3.3V
GND
TXS0104EPWR
Figure 17: RS-232 Level Match Circuit (For UART0)
Pin No.
I/O
21
PO
20
DIO
19
DO
18
DO
17
DI
3.3 V
VCC
DIN1
DIN2
DIN3
DIN4
DIN5
R1OUTB
ROUT1
ROUT2
ROUT3
FORCEON
3.3 V
/FORCEOFF
SN65C3238
Description
(U)SIM2 card power supply
(U)SIM2 card data
(U)SIM2 card clock
(U)SIM2 card reset
(U)SIM2 card hot-plug
detect
Smart Module Series
GND
GND
DOUT1
RXD
DOUT2
CTS
DOUT3
DOUT4
DOUT5
TXD
RIN1
RIN2
RTS
RIN3
/INVALID
DB-9
Comment
Either 1.8 V or 2.95 V (U)SIM
is supported and can be
identified automatically by the
module.
Active low.
If unused, keep it open.
Disabled by software by
47 / 105
Advertisement
Table of Contents
