User's Manual

TOBY-R2 series - System Integration Manual
UBX-16010572 - R04 System description
Page 14 of 147
Function
Pin Name
Pin No
I/O
Description
Remarks
USB
VUSB_DET
4
I
USB detect input
VBUS (5 V typical) USB supply generated by the host must
be connected to this input pin to enable the USB interface.
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.
USB_D-
27
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 [6] 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.
USB_D+
28
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 [6] 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.
DDC
SCL
54
O
I
2
C bus clock line
1.8 V open drain, for communication with I2C-slave devices.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
SDA
55
I/O
I
2
C bus data line
1.8 V open drain, for communication with I2C-slave devices.
See section 1.9.3 for functional description.
See section 2.6.3 for external circuit design-in.
SDIO
SDIO_D0
66
I/O
SDIO serial data [0]
Not supported by “02” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_D1
68
I/O
SDIO serial data [1]
Not supported by “02” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_D2
63
I/O
SDIO serial data [2]
Not supported by “02” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_D3
67
I/O
SDIO serial data [3]
Not supported by “02” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_CLK
64
O
SDIO serial clock
Not supported by “02” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.
SDIO_CMD
65
I/O
SDIO command
Not supported by “02” product versions.
SDIO interface for communication with u-blox Wi-Fi module
See section 1.9.4 for functional description.
See section 2.6.4 for external circuit design-in.