User Guide

LE910Cx HW User Guide
1VV0301298 Rev. 34 Page 74 of 131
Not Subject to NDA
Figure 17: RS232 Level Adaption Circuitry Example
Note: In this case, the length of the lines on the application must be
taken into account to avoid problems in the case of high-speed rates
on RS232.
The RS232 serial port lines are usually connected to a DB9 connector as shown in Figure
18. Signal names and directions are named and defined from the DTE point of view.
Figure 18: RS232 Serial Port Lines Connection Layout
Peripheral Ports
In addition to the LE910Cx serial ports, the LE910Cx supports the following peripheral
ports:
• SPI – Serial Peripheral Interface
• I2C - Inter-integrated circuit
• SD/MMC Card Interface
• SDIO Interface
8.5.1. SPI – Serial Peripheral Interface
The LE910Cx SPI supports the following:
• Master Mode only