ak4367 AKM Semiconductor, Inc., ak4367 Datasheet - Page 22

• Manufacturer Part Number: ak4367
• Description: Low Power 24-bit 2ch Dac With Hp-amp & Output Mixer
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
2) DAC → MOUT
(1) PDN pin should be set to “H” at least 150ns after the power is supplied.
(2) PMVCM bit should be changed to “1” after PDN pin goes to “H”.
(3) DACM bit should be changed to “1” after PMVCM bit is changed to “1”.
(4) PMDAC and PMMO bits should be changed to “1” after DACM bit is changed to “1”.
(5) External clocks (MCLK, BICK, LRCK) are needed to operate DAC. When PMDAC bit = “0”, these clocks can be
(6) When PMMO bit is changed, pop noise is output from MOUT pin.
(7) Analog output corresponding to digital input has the group delay (GD) of 20.8/fs(=472µs@fs=44.1kHz).
(8) ATS bit sets transition time of digital attenuator. Default value is 1061/fs(=24ms@fs=44.1kHz).
MS0247-E-02
stopped. MOUT buffer can operate without these clocks.
Clock Input
PMDAC bit
DAC Internal
SDTI pin
PMMO bit
ATTL/R7-0 bit
MMUTE,
ATTM3-0 bit
MOUT pin
Power Supply
PDN pin
PMVCM bit
DACM bit
State
PD(Power-down)
(1) >150ns
10H(MUTE)
(Hi-Z)
(3) >0
Figure 18. Power-up/down sequence of DAC and MOUT
Don’t care
00H(MUTE)
(2)
>0
(4) >0
(5)
(6)
(7) GD
Normal Operation
FFH(0dB)
(8) 1061/fs
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(7)
(8)
0FH(0dB)
00H(MUTE)
(6)
Don’t care
Don’t care
(Hi-Z)
PD
(6)
Normal Operation
(7)
(8)
FFH(0dB)
[AK4367]
2005/10