SH7670 Datasheet, PDF (630/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 16 Serial Sound Interface (SSI)
• Philips Format
Figures 16.3 and 16.4 demonstrate the supported Philips format both with and without padding.
Padding occurs when the data word length is smaller than the system word length.
SCKP = 0, SWSP = 0, DEL = 0, CHNL = 00
System word length = data word length
SSISCK
SSIWS
SSIDATA
prev. sample MSB
LSB
+1
LSB MSB
LSB
+1
LSB
next sample
System word 1 =
data word 1
System word 2 =
data word 2
Figure 16.3 Philips Format (without Padding)
SCKP = 0, SWSP = 0, DEL = 0, 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 16.4 Philips Format (with Padding)
Rev. 1.00 Nov. 14, 2007 Page 604 of 1262
REJ09B0437-0100