SH7670 Datasheet, PDF (611/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 16 Serial Sound Interface (SSI)
Section 16 Serial Sound Interface (SSI)
The serial sound interface (SSI) is a module designed to send or receive audio data interface with
various devices offering Philips format compatibility. It also provides additional modes for other
common formats, as well as support for multi-channel mode.
16.1 Features
• Number of channels: Two channels
• Operating mode: Non-compressed mode
The non-compressed mode supports serial audio streams divided by channels.
• Serves as both a transmitter and a receiver
• Capable of using serial bus format
• Asynchronous transfer takes place between the data buffer and the shift register.
• It is possible to select a value as the dividing ratio for the clock used by the serial bus interface.
• It is possible to control data transmission or reception with DMAC and interrupt requests.
• Selects the oversampling clock input from among the following pins:
EXTAL, XTAL (Clock operation mode 0)
CKIO (Clock operation modes 1 and 2)
AUDIO_CLK
Figure 16.1 shows a schematic diagram of the four channels in the SSI module.
SSIWS0
SSISCK0
SSIDATA0
SSIWS1
SSISCK1
SSIDATA1
EXTAL
XTAL
CKIO
AUDIO_CLK
SSI0
SSI1
Figure 16.1 Schematic Diagram of SSI Module
Rev. 1.00 Nov. 14, 2007 Page 585 of 1262
REJ09B0437-0100