Datasheet

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DIN/DOUT
(16 Bit)
MSB LSB
D15 D14 D15 D14
0 1 30 3129
D1
FS
32 SCLKs
D1 D0
MSB LSB
D0
Master (CH 1) Slave (CH 2)
SCLK
(Output)
Cascade Mode and Frame-Sync Delayed (FSD)
TLV320AIC20, TLV320AIC21
TLV320AIC24, TLV320AIC25
TLV320AIC20K, TLV320AIC24K
SLAS363D – MARCH 2002 – REVISED APRIL 2005
Figure 19. Timing Diagram for FS in the Continuous Transfer Mode
In cascade mode, the DSP should be in slave mode, i.e., it receives all frame-sync pulses from the master
though the master's FS. The master's FSD is output to the first slave and the first slave's FSD is output to the
second slave device and so on. Figure 20 shows the cascade of four TLV320AIC2xs in which the closest one to
DSP is the master and the rest are slaves. The FSD output of each device is input to the FS terminal of the
succeeding device. Figure 21 shows the FSD timing sequence in the cascade.
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