ak4633 AKM Semiconductor, Inc., ak4633 Datasheet - Page 78

• Manufacturer Part Number: ak4633
• Description: 16-bit ?? Mono Codec With Alc & Mic/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Master clock can be stopped when ADC, DAC and programmable filter don’t operate.
MS0447-E-03
External MCKI
External BICK
External FCK
Stop of Clock
(Addr:01H, D0)
(Addr:01H, D1)
1. PLL Master Mode
<Example>
2. PLL Slave Mode (FCK or BICK pins)
(Addr:01H, D0)
<Example>
PMPLL bit
PMPLL bit
MCKO bit
(1) Power down PLL: PMPLL bit = “ 1 ” → “ 0 ”
(2) Stop MCKO clock: MCKO bit = “ 1 ” → “ 0 ”
(3) Stop an external master clock.
(1) Power down PLL: PMPLL bit = “ 1 ” → “ 0 ”
(2) Stop the external BICK and FCK clocks.
"H" or "L"
Input
Input
Input
(1)
(1)
(2)
(3)
(2)
(2)
Figure 57. Clock Stopping Sequence (1)
Figure 58. Clock Stopping Sequence (2)
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Example:
Example
Audio I/F Format: DSP Mode, BCKP = MSBS = “0”
Input Master Clock Select at PLL Mode : 11.2896MHz
BICK frequency at Master Mode : 64fs
Sampling Frequency:8kHz
Audio I/F Format : DSP Mode, BCKP = MSBS = “0”
PLL Reference clock: BICK
BICK frequency: 64fs
Sampling Frequency: 8kHz
(1) (2) Addr:01H, Data:08H
Stop an external MCKI
(2) Stop the external clocks
(1) Addr:01H, Data:04H
[AK4633]
2006/04