AK4492ECB Datasheet, PDF (41/101 Pages) Asahi Kasei Microsystems – Quality Oriented 32-Bit 2ch DAC

[AK4492]
(1) Pin Control Mode (PSN pin = “H”)
(1)-1. Manual Setting Mode (ACKS pin = “L”)
The MCLK frequency corresponding to each sampling speed should be provided externally (Table 6).
DFS1-0 bits are fixed to “00”. In this mode, quad speed and double speed modes are not available.
Table 6. System Clock Example (Manual Setting Mode @Pin Control Mode)
LRCK
MCLK (MHz)
BICK
fs
128fs 192fs 256fs 384fs 512fs 768fs 1024fs 1152fs
64fs
32.0 kHz N/A N/A 8.1920 12.2880 16.3840 24.5760 32.7680 36.8640 2.0480 MHz
44.1 kHz N/A N/A 11.2896 16.9344 22.5792 33.8688 N/A
N/A 2.8224 MHz
48.0 kHz N/A N/A 12.2880 18.4320 24.5760 36.8640 N/A
N/A 3.0720 MHz
(N/A: Not available)
(1)-2. Auto Setting Mode (ACKS pin = “H”)
In auto setting mode, MCLK frequency and sampling frequency are detected automatically (Table 7).
MCLK of corresponded frequency to each sampling speed mode should be input externally (Table 8,
Table 9).
Table 7. Sampling Speed (Auto Setting Mode @Pin Control Mode)
MCLK
Sampling Speed
1152fs/1024fs
Normal (fs  32 kHz)
512fs/256fs 768fs/384fs
Normal
256fs
384fs
Double
128fs
192fs
Quad
64fs
96fs
Oct
32fs
48fs
Hex
Table 8. System Clock Example 1 (Auto Setting Mode @Pin Control Mode)
LRCK
MCLK (MHz)
Fs
32fs
48fs
64fs
96fs
128fs
192fs
32.0 kHz
N/A
N/A
N/A
N/A
N/A
N/A
44.1 kHz
N/A
N/A
N/A
N/A
N/A
N/A
48.0 kHz
N/A
N/A
N/A
N/A
N/A
N/A
88.2 kHz
N/A
N/A
N/A
N/A
N/A
N/A
96.0 kHz
N/A
N/A
N/A
N/A
N/A
N/A
176.4 kHz
N/A
N/A
N/A
N/A
22.5792 33.8688
192.0 kHz
N/A
N/A
N/A
N/A
24.5760 36.8640
384 kHz
N/A
N/A
24.576 36.864
N/A
N/A
768 kHz 24.576 36.864
N/A
N/A
N/A
N/A
(N/A: Not available)
Sampling
Speed
Normal
Double
Quad
Oct
Hex
016011073-E-00
- 41 -
2016/12