User's Guide

LE910Cx HW User Guide
Doc#: 1VV0301298
Rev. 13.0 Page 74 of 124 2019-06-07
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.
Table 28: 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 O SPI chip-select output 1.8V
Figure 15: SPI Signal Connectivity
LE910Cx
(Master)
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO
Host (Slave)
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO