Sierra Wireless AirPrime SL Series, Migration Manual, Page: 23 / 49

WA_DEV_LG_UGD_001 Rev 002 March 30, 2011 23
Migration Guide Hardware Compatibility
4.1.2.4. UART2 Interface
The SL6087 UART2 interface is assigned to the same pin of the SL808x, SL809x and SL501x UART1 interface. In case the UART interface is required , it
is necessary to have software customization on the SL6087 to enable UART2 which is not enabled by default.
Table 13. Common UART Interface on the SL Series Embedded Modules
Pin # SL6087 SL808x SL809x SL501x
Signal
Name Function Value Signal
Name Function Value Signal
Name Function Value Signal
Name Function Value
45 TXD2 Transmit
serial data 1V8 input UART1_T
XD Transmit
serial data 1V8 input UART1_T
XD Transmit
serial data 1V8 input UART1_T
XD Transmit
serial data 2V6 input
46 RXD2 Receive
serial data 1V8 output UART1_R
XD Receive
serial data 1V8 output UART1_R
XD Receive
serial data 1V8 output UART1_R
XD Receive
serial data 2V6 output
47 CTS2 Clear to
send 1V8 output UART1_C
TS_N Clear to
send 1V8 output UART1_C
TS_N Clear to
send 1V8 output UART1_C
TS_N Clear to
send 2V6 output
48 RTS2 Ready to
send 1V8 input UART1_R
TS_N Ready to
send 1V8 input UART1_R
TS_N Ready to
send 1V8 input UART1_R
TS_N Ready to
send 2V6 input
The four-line serial interface is based on TIA-232 standard interface. Note however that for the SL80xx and SL501x, there is an option to configure the
embedded module to support full UART using the configurations listed in the table below.
Table 14. Configurations for Supporting a Full UART on the SL80xx/SL501x
Additional UART2 Signal Configuration A Configuration B Configuration C
Signal
Name Function Value Pin
Number Signal
Name Function Pin
Number Signal
Name Function Pin
Number Signal
Name Function
DCD
Data
Carrier
Detect
1V8 output 3 GPIO_1
General
Purpose I/O
65
PCM_DOU
T PCM Data
Output
11 SPI_CS_N
SPI Chip
Select
DTR
Data
Terminal
Ready
1V8 input 2 GPIO_2
General
Purpose I/O
66 PCM_DIN
PCM Data
Input
12 SPI_CLK SPI Clock