User's Manual

LE920 Hardware User Guide
1vv0301026 Rev.8 2015-01-03
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Reserved. Page 57 of 88
10. Peripheral Ports
In addition to Telit LE920 serial ports, the LE920 supports the following peripheral ports:
SPI – Serial Peripheral Interface
I2C - Inter-integrated circuit
2 x SDIO – Secure Digital I/O
10.1. SPI Serial Peripheral Interface
The LE920 SPI supports the following:
Master Mode only
1.8V CMOS level
Up to 26MHz clock rate
NOTE:
SPI is supported only on the Linux side.
LE920 can support Master mode only, and can’t be configured as slave mode.
PAD
Signal
I/O
Function
Type
COMMENT
P19
SPI_CLK
O
SPI Clock output
1.8V
M19
SPI_MISO
I
SPI data Master Input Slave output
1.8V
K19
SPI_MOSI
O
SPI data Master Output Slave input
1.8V
N18
SPI_CS
O
SPI Chip select output
1.8V
LE920 (Master)
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO
Host (Slave)
SPI_CS
SPI_CLK
SPI_MOSI
SPI_MISO