Motorola Mobility LLC T56KT1 User Manual

The G30 provides a synchronous SPI-compatible serial interface, implemented with the 
synchronous serial controller hardware block of the G30. The SPI is a master-slave protocol: the 
module runs as a SPI master device.

The SPI interface includes basically the following signals to transmit and receive data and to 
synchronize them:

MOSI (master output, slave input) signal which is an output for the module while it runs as 
SPI master;

MISO (master input, slave output) signal which is an input for the module while it runs as 
SPI master;

Clock signal which is an output for the module while it runs as SPI master;

Optional chip select signal which is an output for the module while it runs as SPI master.

The SPI interface is internally connected to the I

2

S digital audio interface, and is 

controlled by means of software settings. Hence SPI interface is available only if the I

2

S 

digital audio interface is disabled.

The SPI interface can be used as a data event logger by connecting SPI signals to an external 
SPI-UART dedicated interface, and enabling the data logging interface by SW.

In case that the M2M zone platform is being used, the SPI interface can be configured as 
GPIOs, disabling the I

2

S digital audio and SPI interface.

The board to board pins related to SPI interface description are given in 

:

SPI_IRQ

I

SPI Interrupt Input

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

I/O

Capture/Compare

I/O

GPIO

SPI_MOSI

O

SPI sync data (MOSI)
Short to pin 5

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

SPI_CS

O

SPI chip select
Short to pin 58

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

SPI_CLK

O

SPI Clock
Short to Pin 57

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