Integration Manual

Table Of Contents
TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R26 System description
Page 15 of 162
Function
Pin Name
Pin No
I/O
Description
Remarks
SIM
VSIM
59
O
SIM supply output
VSIM = 1.8 V / 3 V output as per the connected SIM type.
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
SIM_IO
57
I/O
SIM data
Data input/output for 1.8 V / 3 V SIM
Internal 4.7 k pull-up to VSIM.
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
SIM_CLK
56
O
SIM clock
3.43 MHz clock output for 1.8 V / 3 V SIM
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
SIM_RST
58
O
SIM reset
Reset output for 1.8 V / 3 V SIM
See section 1.8 for functional description.
See section 2.5 for external circuit design-in.
USB
VUSB_DET
4
I
USB detect input
Leave unconnected: VUSB_DET functionality is not supported.
See section 1.9.1 for functional description.
See section 2.6.1 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 [7] are part of the
USB pad 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 1.9.1 for functional description.
See section 2.6.1 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 [7] are part of the
USB pad 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 1.9.1 for functional description.
See section 2.6.1 for external circuit design-in.