User's Guide

LE910Cx Hardware User Guide
1VV0301298 Rev. 1.04 - 2017-05-25
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8.5. 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
• 1.8V CMOS level
• Up to 50 MHz clock rate
NOTE:
SPI is supported only on the Linux side.
The LE910Cx module supports Master mode only and cannot be configured as Slave mode.
NOTE:
Simultaneous / Concurrent usage of AUX UART and SPI is not supported.
Table 27: SPI Signals
PAD Signal I/O Function Type Comment
F15 SPI_CLK O SPI clock output 1.8V
E15 SPI_MISO I SPI data Master input Slave output 1.8V Shared with RX_AUX
D15 SPI_MOSI O SPI data Master output Slave input 1.8V Shared with TX_AUX
H14 SPI_CS/GPIO11 O SPI chip-select output 1.8V
Figure 15: SPI Signal Connectivity
LE910Cx
SPI_CS
SPI_CLK
SPI_MO
SPI_MISO
Host (Slave)
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO