SH7203 Datasheet, PDF (917/1686 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 18 Serial Sound Interface (SSI)
Figure 18.5 shows Sony format and figure 18.6 shows Matsushita format. Padding is assumed in
both cases, but may not be present in a final implementation if the system word length equals the
data word length.
• Sony Format
SCKP = 0, SWSP = 0, DEL = 1, CHNL = 00, SPDP = 0, SDTA = 0
System word length > data word length
SSISCK
SSIWS
SSIDATA
MSB
LSB
MSB
LSB
Next
Data word 1
Padding
Data word 2
Padding
System word 1
System word 2
Figure 18.5 Sony Format
(Transmitted and received in the order of serial data and padding bits)
• Matsushita Format
SCKP = 0, SWSP = 0, DEL = 1, CHNL = 00, SPDP = 0, SDTA = 1
System word length > data word length
SSISCK
SSIWS
SSIDATA ^Prev.
MSB
LSB
Padding
Data word 1
System word 1
MSB
LSB
Padding
Data word 2
System word 2
Figure 18.6 Matsushita Format
(Transmitted and received in the order of padding bits and serial data)
Rev. 2.00 Apr. 16, 2008 Page 887 of 1652
REJ09B0313-0200