AK4343EN AKM [Asahi Kasei Microsystems], AK4343EN Datasheet - Page 62
AK4343EN
Manufacturer Part Number
AK4343EN
Description
Stereo DAC with HP/RCV/SPK-AMP
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
1.AK4343EN.pdf
(98 pages)
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ASAHI KASEI
<Speaker-Amp Control Sequence>
Speaker-Amp is powered-up/down by PMSPK bit. When PMSPK bit is “0”, both SPP and SPN pin are in Hi-Z state.
When PMSPK bit is “1” and SPPSN bit is “0”, the Speaker-Amp enters power-save mode. In this mode, SPP pin is placed
in Hi-Z state and SPN pin goes to HVDD/2 voltage. Power-save mode can reduce the pop noise at power-up and
power-down.
MS0478-E-01
PMSPK
PMSPK bit
SPPSN bit
0
1
SPN pin
SPP pin
SPPSN
Hi-Z
x
0
1
Figure 59. Power-up/Power-down Timing for Speaker-Amp
Table 56. Speaker-Amp Mode Setting (x: Don’t care)
HVDD/2
Hi-Z
>1ms
Normal Operation
Power-down
Power-save
Mode
- 62 -
Normal Operation
Hi-Z
Hi-Z
SPP
Normal Operation
HVDD/2
Hi-Z
SPN
HVDD/2
>0
Hi-Z
Hi-Z
Default
[AK4343]
2006/10
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