AK4456 Datasheet, PDF (39/84 Pages) Asahi Kasei Microsystems – 115dB 768kHz Advanced 32-bit DAC

[AK4456]
[1]-2. Daisy Chain
AK4456 is available for Daisy Chain structure. Set DCHAIN bit to “1” or DCHAIN pin to “H” to enable Daisy
Chain mode. Daisy Chain supports TDM512/256 mode.
(1)TDM512 mode
Figure 29 shows example of TDM512 mode Daisy Chain structure (TDM1-0 bits= “11” ). 16ch data is input to
the second AK4456’s SDTI1 pin from a DSP. Connect the second AK4456’s TDMO1 pin to the first
AK4456’s SDTI1 pin. TDMO1 is 8ch shifted data of SDTI1. At TDM512 mode, TDMO2 outputs "L".
Figure 30 shows data I/O example of TDM512 mode. SDTI1 (L6-8, R6-8) data is the input for the DAC of the
second AK4456, and the second AK4456 outputs the data from TDMO1 by shifting 6ch. The first AK4456
accepts SDTI1 (L3-5, R3-5) data as input data of DAC. DIF2-0 bits setting of both first AK4456 and the
second AK4456 must be the same.
TDMO1
TDMO2
SDTI1
SDTI2
First
AK4456
TDMO1
TDMO2
SDTI1
SDTI2
Second
AK4456
DVSS
DSP
Figure 29. Daisy Chain (TDM512 Mode)
LRCK
512 BICK
SDTI1(DSP) ^{L1 R1 L2 R2 L3 R3 L4 R4 L5 R5 L6 R6 L7 R7 L8 R8}
Second AK4456
TDMO1(Second)
L1 R1 L2 R2 L3 R3 L4 R4 L5 R5
Figure 30. Daisy Chain (TDM512 Mode)
First AK4456
015006886-E-00
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2015/06