REL 1.2
Page 22 of 56
i.MX6 SODIMM SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.6.13
UART Interface
i.MX6 SODIMM SOM supports four UART interface on SODIMM Edge connector in which one for Debug UART
interface and other three for
Data UART interface. i.MX6 CPU’s UART
2 controller is used for Debug UART interface
and UART1, UART4 & UART5 controller is used for Data UART interface on SODIMM Edge connector. Also i.MX6
SODIMM SOM supports hardware flow control for request to send and clear to send signals on UART1, UART4 &
UART5 interface.
i.MX6 CPU UART controller supports Serial RS-232NRZ mode, 9-bit RS-485 mode and IrDA mode. It is compatible
with High-speed TIA/EIA-232-F (up to 5.0 Mbit/s) with auto baud rate detection (up to 115.2 Kbit/s). It supports 7 or
8 data bits for RS-232 characters (9-bit RS-485 format), 1 or 2 stop bits and programmable parity (even, odd, and no
parity).
For more details, refer SODIMM Edge connector pins 117 & 118 for Debug UART, pins 7, 9, 97 & 94 for UART1
interface, pins 98, 99, 100 & 101 for UART4 interface, and pins 38, 75, 102 & 103 for UART5 interface on
Note: If Parallel camera interface is used on SODIMM edge, then UART4 & UART5 cannot be used with hardware flow
control for request to send and clear to send signals.
2.6.14
SPI Interface
i.MX6 SODIMM SOM supports one SPI interface with three chip selects on SODIMM
Edge connector. i.MX6 CPU’s
eCSPI2 is used for SPI interface which supports full-duplex synchronous four-wire serial interface with DMA. It
supports 32bit x 64 entry FIFO for both transmit and receive data. It can be configured as Master or Slave. Also
polarity and phase of the Chip Select and SPI Clock are configurable.
For more details, refer SODIMM Edge connector pins 62, 63, 66, 70, 71 & 110 on
Note: If Parallel camera is used with 12bit interface on SODIMM edge, then eCSPI2 interface cannot be used.
Note: If SDIO card detect is not used on SODIMM Edge connector pin 105, the same pin can be used as fourth chip
select of eCSPI2 interface (eCSPI2_SS3(EIM_D25)).
2.6.15
CAN Interface
i.MX6 SODIMM SOM supports two CAN interface on SODIMM
Edge connector. i.MX6 CPU’s FLEXCAN1
& FLEXCAN2
module is used for CAN interface which supports CAN protocol according to the CAN 2.0B protocol specification. It
supports programmable bit rate up to 1 Mb/sec with both standard and extended message frames. Also it supports
64 Message Buffers. To connect external CAN module to this bus, it is necessary to add transceiver in between.
For more details, refer SODIMM Edge connector pins 175, 176, 177 & 178 on