TDA7502_06 Datasheet, PDF (11/25 Pages) STMicroelectronics – In-car remote amplifier DSP

TDA7502
3
SAI interface
Figure 4. SAI timings
SDI0-3
VALID
SAI interface
LRCKR
SCKR
(RCKP=0)
t_sckpl
t_dt
VALID
t_lrh
t_lrs
t_sdis
t_sdih
t_sckr
t_sckph
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Table 11. Cycles
Timing
Description
t_sckr
t_dt
t_lrs
t_lrh
t_sdid
t_sdih
t_sckph
t_sckpl
Minimum Clock Cycle
SCKR active edge to data out valid
LRCK setup time
LRCK hold time
SDI setup time
SDI hold time
Minimum SCK high time
Minimum SCK low time
Value
4T_DSP
10
5
5
15
15
0.35 t_sckr
0.35 t_sckr
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Note: T_DSP = dsp master clock cycle time = 1/F_DSP
Figure 5. SAI protocol when RLRS=0; RREL=0; RCKP=1; RDIR=0
LRCKR (#23)
SCKR (#24)
LEFT
RIGHT
SDI0,1,2 (#20, #21, #22)
LSB(n-1) MSB(word n) MSB-1 (n)
MSB-2 (n)
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