Motorola Mobility LLC T56KT1 User Manual

The module provides an I

2

C bus interface which includes a serial data line and a clock line on the 

board to board pins. The G30 I

2

C acts as master only. The I

2

C bus interface is available to the 

user only with M2M Zone Platform.

The I

2

C signals are pulled-up, using internal 4.7 kOhm resistors.

Do not connect any pull-up resistors when using signals as I

2

C interface.

The I

2

C Bus interface can only be activated by M2M Zone Platform. Otherwise, the I

2

C 

signals are configured as GPIOs.

The board to board pins related to I

2

C bus interface description is given in 

:

The G30 incorporates a SIM interface, which conforms to the GSM 11.11 and GSM 11.12 
standards, that are based on the ISO/IEC 7816 standard. These standards define the electrical, 
signaling and protocol specifications of a GSM SIM card.

SPI_MISO

I

SPI sync data (MISO)
Short to pin 55

Generic digital interfaces 
voltage domain.
Output driver class D.
PU/PD class B.
Value at reset: T.

GPIO4/SCL

O

I

2

C bus clock line

I

2

C interface voltage 

domain.
PU drain.
Value at reset: T/OD.

I/O

GPIO

GPIO3/SDA

I/O

I

2

C bus data line

I

2

C interface voltage 

domain.
PU drain.
Value at reset: T/OD.

I/O

GPIO