Section 26 Serial Sound Interface (SSI) Module
Rev.1.00 Dec. 13, 2005 Page 1003 of 1286
REJ09B0158-0100
In the case of the SSI module configured as a transmitter then each word that is written to SSITDR
is transmitted in order on the serial audio bus.
In the case of the SSI module configured as a receiver each word received on the Serial Audio Bus
is presented for reading in order by SSIRDR.
Figures 26.6 to 26.8 show how 4, 6 and 8 channels are transferred on the serial audio bus.
Note that there are no padding bits in the first example, serial data is transmitted/received first and
followed by padding bits in the second example, and padding bits are transmitted/received first
and followed by serial data in the third example. This selection is purely arbitrary.
MSB
LSB
Data
word 1
MSB
LSB MSB
LSB MSB
LSB
Data
word 2
Data
word 3
Data
word 4
System word 1
System word 2
MSB
LSB
Data
word 1
MSB
LSB MSB
LSB MSB
LSB
Data
word 2
Data
word 3
Data
word 4
System word 1
System word 2
LSB
MSB
SSI_SCK
SSI_WS
SSI_SDATA
SCKP = 0, SWSP = 0, DEL = 1, CHNL = 01, SPDP = don't care, SDTA = don't care
System word length = data word length
×
2
Figure 26.6 Multi-channel Format (4 Channels, No Padding)
MSB
LSB
System word 2
Data
word 1
MSB
LSB MSB
LSB
MSB
Data
word 2
Data
word 3
Padding
System word 1
MSB
LSB MSB
LSB MSB
LSB
Data
word 4
Data
word 5
Data
word 6
SSI_SCK
SSI_WS
SSI_SDATA
Padding
SCKP = 0, SWSP = 0, DEL = 1, CHNL = 10, SPDP = 1, SDTA = 0
System word length = data word length
×
3
Figure 26.7 Multi-channel Format (6 Channels with High Padding)
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
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