ak4560a AKM Semiconductor, Inc., ak4560a Datasheet - Page 40

• Manufacturer Part Number: ak4560a
• Description: 16bit Codec With Alc And Mic/hp/spk-amps
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
(1) When the input level exceeds the ALC1 limiter detection level, the ALC1 limiter operation starts. Zero crossing
(2) Zero crossing detection. When the input signal is detected, the IPGA value is attenuated until the value set by
(3) Zero crossing timeout is set by ZTM1-0 bits. But the first zero crossing timeout cycle after starting the limiter
MS0028-E-00
counter starts at the same time.
LMAT1-0 and the ALC1 limiter operation is finished.
operation may be the short cycle by the state of the last zero crossing counter. (For example, in case of doing the
limiter operation during the recovery operation)
Limiter detection level (LMTH)
Recovery waiting counter reset level (LMTH)
Limiter detection level (LMTH)
Figure 31. In case of continuing the limiter operation (ZELM = “0”)
(3) Zero crossing timeout (ZTM1-0)
(1)
(3) Zero crossing timeout (ZTM1-0)
(2)
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(1)
(2)
ATT level (LMAT1-0)
ATT level (LMAT1-0)
[AK4560A]
2000/05