AK4452VN Datasheet, PDF (43/91 Pages) Asahi Kasei Microsystems – 115dB 768kHz 32-bit 2ch Premium DAC

[AK4452]
[3] Daisy Chain
AK4452 is available for Daisy Chain structure. Daisy Chain mode can be arranged from DCHAIN bit or
DCHAIN pin (Table 15). Daisy Chain supports TDM512/256 mode.
DCHAIN bit
DCHAIN pin
0
1
Mode
TDMO1
Normal
input(SDTI3/4)
Daisy Chain output(TDMO1)
Table 15 Daisy Chain Control
(default)
(1)TDM512 mode
Figure 37 shows example of TDM512 mode Daisy Chain structure (TDM1-0 bits= “11” ). 16ch data is input to
the second AK4452’s SDTI1 pin from a DSP. Connect the second AK4452’s TDMO1 pin to the first
AK4452’s SDTI1 pin. TDMO1 is 8ch shifted data of SDTI1. At TDM512 mode, TDMO2 outputs "L".
Figure 38 shows data I/O example of TDM512 mode. SDTI1 (L8, R8) data is the input for the DAC of the
second AK4452, and the second AK4452 outputs the data from TDMO1 by shifting 8ch. The first AK4452
accepts SDTI1 (L7, R7) data as input data of DAC. DIF2-0 bits setting of both first AK4452 and the second
AK4452 must be the same.
TDMO1 _First SDTI1
AK4452
TDMO1Second SDTI1
AK4452
DSP
Figure 37. Daisy Chain (TDM512 Mode)
LRCK
SDTI1
TDMO1
512 BICK
L1 R1 L2 R2 L3 R3 L4 R4 L5 R5 L6 R6 L7 R7 L8 R8
Second AK4452
L1 R1 L2 R2 L3 R3 L4 ^{R4 L5 R5 L6 R6 L7 R7}
First AK4452
Figure 38. Daisy Chain (TDM512 Mode)
Rev. 0.1
- 43 -
2014/04