SH7760 Datasheet, PDF (748/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

SCKP = 0, SWSP = 0, DEL = 0, CHNL = 00, SPDP = 0, SDTA = 0
System word length > data word length
SSI_SCK
SSI_WS
SSI_SDATA
MSB
LSB
MSB
LSB
Next
Data word 1
Padding
Data word 2
Padding
System word 1
System word 2
Figure 20.3 Philips Format (with Padding)
Figure 20.4 shows the format used by Sony. Figure 20.5 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.
2. Sony Format
SCKP = 0, SWSP = 0, DEL = 1, CHNL = 00, SPDP = 0, SDTA = 0
System word length > data word length
SSI_SCK
SSI_WS
SSI_SDATA
MSB
LSB
MSB
LSB
Next
Data word 1
Padding
Data word 2
Padding
System word 1
System word 2
Figure 20.4 Sony Format (with Serial Data First, Followed by Padding Bits)
Rev. 1.0, 02/03, page 698 of 1294