AK4388A Datasheet, PDF (10/18 Pages) Asahi Kasei Microsystems – 192kHz 24-Bit 2ch ΔΣ DAC

[AK4388A]
LRCK
BICK
(64fs)
SDTI
Mode 2
01
2
22 23 24
30 31 0 1
2
23 22
1 0 Don’t care
23:MSB, 0:LSB
Lch Data
23 22
Figure 6. Mode 2 Timing
22 23 24
30 31 0 1
1 0 Don’t care
Rch Data
23 22
LRCK
BICK
(64fs)
SDTI
Mode 3
0123
23 24 25
31 0 1 2 3
23 22
1 0 Don’t care
23 22
23:MSB, 0:LSB
Lch Data
Figure 7. Mode 3 Timing
23 24 25
31 0 1
1 0 Don’t care
23
Rch Data
■ De-emphasis Filter
A digital de-emphasis filter is built-in (tc = 50/15µs). The DEM pin is internal pull-down pin. The digital de-emphasis
filter is enabled by setting the DEM pin to “H”. Refer to “FILTER CHARACTERISTICS” regarding the gain error when
the de-emphasis filter is enabled. In case of double speed mode (MCLK=256fs/384fs) and quad speed mode
(MCLK=128fs/192fs), the digital de-emphasis filter is always off.
DEM pin De-emphasis Filter
1
ON
0
OFF
(default)
Table 6. De-emphasis Filter Control (Normal Speed Mode)
MS1008-E-02
- 10 -
2010/09