Renesas SH7264 ユーザーズマニュアル

 

Section 18   Serial Sound Interface 

 

R01UH0134EJ0400  Rev. 4.00  

 

Page 893 of 2108 

Sep 24, 2014 

 

 

 
SH7262 Group, SH7264 Group 

Section 18   Serial Sound Interface 

The serial sound interface is a module designed to send or receive audio data interface with 
various devices offering I

2

S bus compatibility. It also provides additional modes for other common 

formats, as well as support for multi-channel mode. 

  Number of channels: Four 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 

Channel 0 supports full-duplex communications. 

  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 DMA transfer and interrupt 

requests. 

  Selects the oversampling clock input from among the following pins: 

AUDIO_CLK (1 to 25 MHz) 

AUDIO_X1, AUDIO_X2 (when connecting a crystal resonator: 10 to 25 MHz, when used to 
input external clock: 1 to 25 MHz) 

  Includes 8-stage FIFO buffers in transmitter and receiver