SARA-R4 series - System Integration Manual
UBX-16029218 - R06
System description
Page 12 of 102
Function
Pin Name
Pin No
I/O
Description
Remarks
SPI
I2S_WA /
SPI_MOSI
34
O
SPI MOSI
SPI Master Output Slave Input, alternatively configurable as
I
2
S word alignment
Not supported by “00”, “01” and “02” product versions.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
I2S_RXD /
SPI_MISO
37
I
SPI MISO
SPI Master Input Slave Output, alternatively configurable as
I
2
S receive data
Not supported by “00”, “01” and “02” product versions.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
I2S_CLK /
SPI_CLK
36
O
SPI clock
SPI clock, alternatively configurable as
I
2
S clock
Not supported by “00”, “01” and “02” product versions.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
I2S_TXD /
SPI_CS
35
O
SPI Chip Select
SPI Chip Select, alternatively configurable as
I
2
S transmit data
Not supported by “00”, “01” and “02” product versions.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
SDIO
SDIO_D0
47
I/O
SDIO serial data [0]
Not supported by “00”, “01” and “02” product versions.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_D1
49
I/O
SDIO serial data [1]
Not supported by “00”, “01” and “02” product versions.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_D2
44
I/O
SDIO serial data [2]
Not supported by “00”, “01” and “02” product versions.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_D3
48
I/O
SDIO serial data [3]
Not supported by “00”, “01” and “02” product versions.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_CLK
45
O
SDIO serial clock
Not supported by “00”, “01” and “02” product versions.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_CMD
46
I/O
SDIO command
Not supported by “00”, “01” and “02” product versions.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
DDC
SCL
27
O
I
2
C bus clock line
1.8 V open drain, for communication with I2C-slave devices.
Internal pull-up to
V_INT
: external pull-up is not required.
Not supported by “00” and “01” product versions.
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
SDA
26
I/O
I
2
C bus data line
1.8 V open drain, for communication with I2C-slave devices.
Internal pull-up to
V_INT
: external pull-up is not required.
Not supported by “00” and “01” product versions.
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
