Renesas SH7781 - Manual (Page 1327)

26. Serial Sound Interface (SSI) Module
Rev.1.00 Jan. 10, 2008 Page 1297 of 1658
REJ09B0261-0100
Section 26 Serial Sound Interface (SSI) Module
This LSI incorporates two channels of serial sound interface (SSI) modules that send or receive
audio data to or from a variety of devices. In addition to the common formats, they support burst
and multi-channel mode.
26.1 Features
The SSI has the following features.
• Number of channels: Two channels
• Operating modes: Compressed mode and non-compressed mode
The compressed mode is used for continuous bit stream transfer
The non-compressed mode supports all serial audio streams divided into channels.
• The SSI module is configured as any of a transmitter or receiver. The serial bus format (refer
to table 26.3) can be used in the compressed and non-compressed mode.
• Asynchronous transfer between the data buffer and the shift register
• Division ratios of the serial bus interface clock can be selected.
• Data transmission/reception can be controlled from the DMAC or SSI interrupt.