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Section 18 Serial Sound Interface
Page 922 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
(8) Multi-channel Formats
Some devices extend the definition of the specification by I
2
S bus and allow more than 2 channels
to be transferred within two system words.
This module supports the transfer of 4, 6, and 8 channels by using the CHNL, SWL and DWL bits
only when the system word length (SWL) is greater than or equal to the data word length (DWL)
multiplied by channels (CHNL).
Table 18.4 shows the number of padding bits for each of the valid setting. If setting is not valid,
"" is indicated instead of a number.
Table 18.4 The Number of Padding Bits for Each Valid Setting
Padding Bits per System
Word
DWL[2:0] 000 001 010 011 100 101 110
CHNL
[1:0]
Decoded
Channels
per System
Word
SWL
[2:0]
Decoded
Word
Length 8 16 18 20 22 24 32
00 1 000 8 0
001 16 8 0
010 24 16 8 6 4 2 0
011 32 24 16 14 12 10 8 0
100 48 40 32 30 28 26 24 16
101 64 56 48 46 44 42 40 32
110 128 120 112 110 108 106 104 96
111 256 248 240 238 236 234 232 224
01 2 000 8
001 16 0
010 24 8
011 32 16 0
100 48 32 16 12 8 4 0
101 64 48 32 28 24 20 16 0
110 128 112 96 92 88 84 80 64
111 256 240 224 220 216 212 208 192