TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28
System description
Page 18 of 164
Function Pin name
Pin No
I/O Description
Remarks
Antennas ANT1
U.FL
I/O Primary antenna
Main Tx / Rx antenna interface.
50
nominal characteristic impedance.
Antenna circuit affects RF performance and integrating
device compliance with applicable certification schemes.
See section
for functional description / requirements.
See section
for external circuit design-in.
ANT2
U.FL
I
Secondary antenna Rx only for MIMO 2x2 and Rx diversity.
50
nominal characteristic impedance.
Antenna circuit affects RF performance and integrating
device compliance with applicable certification schemes.
See section
for functional description / requirements
See section
for external circuit design-in.
SIM
UIM_PWR
8
O
SIM supply output
UIM_PWR = 1.8 V / 3 V automatically generated
according to the connected SIM type.
See section
for functional description.
See section
for external circuit design-in.
UIM_DATA
10
I/O SIM data
Data input/output for 1.8 V / 3 V SIM
Internal 4.7 k
pull-up to UIM_PWR.
See section
for functional description.
See section
for external circuit design-in.
UIM_CLK
12
O
SIM clock
3.43 MHz clock output for 1.8 V / 3 V SIM
See section
for functional description.
See section
for external circuit design-in.
UIM_RESET
14
O
SIM reset
Reset output for 1.8 V / 3 V SIM
See section
for functional description.
See section
for external circuit design-in.
USB
USB_D-
36
I/O USB Data Line D-
USB interface for AT and 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 series resistors as
required by the USB 2.0 specifications
are part of the
USB pad driver and need not be provided externally.
See section
See section
for external circuit design-in.
USB_D+
38
I/O USB Data Line D+
USB interface for AT and 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 series resistors as
required by the USB 2.0 specifications
are part of the
USB pad driver and need not be provided externally.
See section
for functional description.
See section
for external circuit design-in.
Specific
Signals
LED_WWAN#
42
O
LED indicator
output
Open drain active low output.
See section
for functional description.
See section
for external circuit design-in.
W_DISABLE#
20
I
Wireless radio
disable input
Internal 22 k
pull-up to 3.3Vaux.
See section
for functional description.
See section
for external circuit design-in.
Not
Connected
NC
1, 3, 5-7, 11,
13,16,17,19,
23, 25, 28,
30-33, 44-
46,47-49,51
N/A Not connected
Internally not connected.
See section
for the description.
Table 4: MPCI-L2 series module pin definition, grouped by function
