LARA-R2 series - System Integration Manual
UBX-16010573 - R12
System description
Page 15 of 157
Function
Pin Name
Pin No
I/O
Description
Remarks
USB_D+
29
I/O
USB Data Line D+
USB interface for AT commands, data communication, FOAT,
FW update by u-blox EasyFlash tool and diagnostic.
90
nominal differential impedance (Z
0
)
30
nominal common mode impedance (Z
CM
)
Pull-up or pull-down resistors and external series resistors as
required by the
USB 2.0 specifications
[9] are part of the USB
pin driver and need not be provided externally.
If the USB interface is not used by the Application Processor,
Test-Point for diagnostic / FW update access is recommended
See section 1.9.2 for functional description.
See section 2.6.2 for external circuit design-in.
HSIC
HSIC_DATA
99
I/O
HSIC USB data line
Not supported by “02” and “62” product versions.
USB High-Speed Inter-Chip compliant interface for AT
commands, data communication, FOAT, FW update by u-blox
EasyFlash tool and diagnostic.
50
nominal characteristic impedance.
Test-Point for diagnostic / FW update access is recommended.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
HSIC_STRB
100
I/O
HSIC USB strobe
line
Not supported by “02” and “62” product versions.
HSIC interface for AT commands, data communication, FOAT,
FW update by u-blox EasyFlash tool and diagnostic.
50
nominal characteristic impedance.
Test-Point for diagnostic / FW update access is recommended.
See section 1.9.3 for functional description.
See section 2.6.3 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.
See section 1.9.4 for functional description.
See section 2.6.4 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.
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO
SDIO_D0
47
I/O
SDIO serial data [0]
Not supported by “02” and “62” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
SDIO_D1
49
I/O
SDIO serial data [1]
Not supported by “02” and “62” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
SDIO_D2
44
I/O
SDIO serial data [2]
Not supported by “02” and “62” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
SDIO_D3
48
I/O
SDIO serial data [3]
Not supported by “02” and “62” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
SDIO_CLK
45
O
SDIO serial clock
Not supported by “02” and “62” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.5 for functional description.
See section 2.6.5 for external circuit design-in.
