ak4563a AKM Semiconductor, Inc., ak4563a Datasheet - Page 32

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

ASAHI KASEI
(1) When the input signal exceeds the ALC recovery waiting counter reset level, the ALC recovery operation stops, the
(2) ZTM1-0 bits set zero crossing timeout and WTM1-0 bits sets the ALC recovery operation period. When the ALC
MS0067-E-02
(1) Recovery waiting counter reset level (LMTH) or reference value of recovery operation (REF6-0)
ALC recovery operation is repeated when input signal level is below “ALC recovery waiting counter reset level
(LMTH)” again. When the IPGA value by repeating the ALC recovery operation reaches the reference level (REF6-0
bits), the ALC recovery operation stops also.
recovery waiting time (WTM1-0 bits) is shorter than zero crossing timeout period of ZTM1-0 bit, the ALC recovery
is operated by the zero crossing timeout period of ZTM1-0 bit. Therefore, in this case the auto recovery operation
period is not constant.
(2) Zero crossing timeout (ZTM1-0) & Recovery waiting time (WTM1-0)
Zero Crossing Detect
Figure 19. The ALC Recovery Operation
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Gain Level (RATT1-0)
[AK4563A]
2004/12