User's Guide

LE910Cx HW User Guide
Doc#: 1VV0301298
Rev. 13.0 Page 74 of 124 2019-07-15
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