r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1346

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

26. Serial Sound Interface (SSI) Module
1. Philips Format
Rev.1.00 Jan. 10, 2008 Page 1316 of 1658
REJ09B0261-0100
Figures 26.2 and 26.3 show the supported Philips protocol both with padding and without.
Padding occurs when the data word length is smaller than the system word length.
Figure 26.4 shows the format used by Sony. Figure 26.5 shows the format used by Matsushita.
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.
SSI_SCK
SSI_WS
SSI_SDATA
SSI_SCK
SSI_WS
SSI_SDATA
SCKP = 0, SWSP = 0, DEL = 0, CHNL = 00, SPDP = 0, SDTA = 0
System word length > data word length
SCKP = 0, SWSP = 0, DEL = 0, CHNL = 00
System word length = data word length
prev. sample
MSB
Figure 26.2 Philips Format (with No Padding)
Figure 26.3 Philips Format (with Padding)
Data word 1
MSB
System word 1
System word 1 =
data word 1
LSB
LSB+1
Padding
LSB MSB
MSB
System word 2 =
Data word 2
data word 2
System word 2
LSB
LSB+1
LSB
Padding
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