Texas Instruments OMAP5912 Reference Manual page 1082

Multimedia processor device overview and architecture

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SPI Master/Slave

Functional Description

This document describes the serial interfaces of the OMAP5912 multimedia

The serial interface is a bidirectional, four-line interface dedicated to the

transfer of data to and from external devices offering a four-line serial interface.

The four-line interface consists of:

The clock used to shift data in and out

The device enable

The data input

The data output

This serial port is based on a looped shift register, thus allowing both transmit

(PISO) and receive (SIPO) modes. It can operate in master or in slave mode

using MCU-DSP or DMA protocol. It supports up to five serial devices. The

serial data is sent MSB first.

The serial port is fully controlled by the OCP bus (data write, data read, and

activation of serialization operations).

Serial Interfaces

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