SH7261 Datasheet, PDF (822/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 18 Serial Sound Interface (SSI)
2. Sony Format
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.
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)
3. 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 Sep. 07, 2007 Page 790 of 1312
REJ09B0320-0200