ak4563a AKM Semiconductor, Inc., ak4563a Datasheet - Page 30

• Manufacturer Part Number: ak4563a
• Description: Low Power 16bit 4ch Adc & 2ch Dac With Alc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
(1) When the input level exceeds the ALC limiter detection level, the ALC limiter operation starts. Zero crossing counter
(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
MS0067-E-02
starts at the same time.
LMAT1-0 and the ALC 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 17. In case of continuing the limiter operation (ZELMN = “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)
[AK4563A]
2004/12