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LH79524/LH79525 User's Guide
10.1 Theory of Operation
10.1.1 Conversion
The SSP-to-I
mat on transmit or from I
ported by the SSP block and is fully described in the SSP Chapter. The I
audio standard made popular by Phillips Semiconductor. Figure 10-2 shows the Texas
Instruments DSP format for continuous transfers.
2
The I
S frame format is described in the I
conductors. An example I
2
S converter converts a data stream from the TIDSP format to the I
2
S format to TI DSP format on receive. The TI DSP format is sup-
2
S transaction is shown in Figure 10-3.
SSPCLK
SSPFRM
SSPTX/
SSPRX
Figure 10-2. TI SSP Frame Format
SCK
WS
SD
WORD n-1
RIGHT CHANNEL
2
S Bus specification published by Phillips Semi-
MSB
4 to 16 BITS
MSB
WORD n
LEFT CHANNEL
2
Figure 10-3. I
S Format
Version 1.0
2
I
S Converter
2
S for-
2
S format is an
LSB
LH79525-77
LSB
MSB
WORD n+1
RIGHT CHANNEL
LH79525-94
10-3
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