OMAP5912_16 Datasheet, PDF (180/270 Pages) Texas Instruments – OMAP5912 Applications Processor

Functional Overview
3.7.2 Multichannel Serial Interfaces (MCSI1 and 2)
The MCSI provides a flexible serial interface with multichannel transmission capability. The MCSI allows the
DSP to access a variety of external devices, such as audio codecs and other types of analog converters. The
DSP public peripheral bus has access to two MCSIs: MCSI1 and MCSI2. These MCSIs provide full-duplex
transmission and master or slave clock control. All transmission parameters are configurable to cover the
maximum number of operating conditions. The MCSIs have the following features:
• Master or slave clock control (transmitter clock and frame synchronization pulse)
− Programmable transmitter clock frequency in master mode of up to one half the OMAP5912 base
frequency (12,13, or 19.2 MHz)
− Receiver clock frequency in slave mode of up to the base frequency (12,13, or 19.2 MHz)
• Single-channel or multichannel (x16) frame structure
• Programmable word length: 3 to 16 bits
• Full-duplex transmission
• Programmable frame configuration
− Continuous or burst transmission
− Normal or alternate framing
− Normal or inverted frame and clock polarities
− Short or long frame pulse
− Programmable oversize frame length
− Programmable frame length
• Programmable interrupt condition (TX and RX)
− Error detection with interrupt generation on wrong frame length
− System DMA support for both TX and RX data transfers
180 SPRS231E
December 2003 − Revised December 2005