AK4632VN AKM [Asahi Kasei Microsystems], AK4632VN Datasheet - Page 68

• Manufacturer Part Number: AK4632VN
• Description: 16-Bit ?? Mono CODEC with ALC & MIC/SPK/Video-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

ASAHI KASEI
If the clocks are supplied, power down VCOM (PMVCM bit: “1” → “0”) after all blocks except for VCOM are
powered-down and a master clock stops. The AK4632 is also powered-down by PDN pin = “L”. When PDN pin = “L”,
the registers are initialized.
MS0396-E-00
External MCKI
External BICK
External MCKI
External FCK
Power down
3. When an external clock (MCKI pin) is used in PLL Slave Mode.
(Addr:01H, D0)
(Addr:01H, D1)
MCKPD bit
(Addr:01H, D2)
<Example>
4. EXT Slave Mode
MCKPD bit
(Addr:01H, D2)
<Example>
PMPLL bit
MCKO bit
(1) Power down PLL: PMPLL bit = “1” → “0”
(2) Stop the external master clock.
(1) Pull down the MCKI pin: MCKPD bit = “0” → “1”
(2) Stop the external MCKI, BICK and FCK clocks.
Stop MCKO output: MCKO bit = “1” → “0”
Pull down the MCKI pin: MCKPD bit = “0” → “1”
When the external master clock becomes Hi-Z, MCKI pin should be pulled down.
When the external master clock becomes Hi-Z, MCKI pin should be pulled down.
Input
Input
Input
Input
(1)
(1)
(1)
(1)
(2)
(2)
(2)
(2)
Figure 58. Clock Stopping Sequence (3)
Figure 59. Clock Stopping Sequence (4)
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Example
Example
Audio I/F Format :MSB justified(ADC and DAC)
Input MCKI frequency:1024fs
Sampling Frequency:8kHz
Audio I/F Format : DSP Mode, BCKP = MSBS = “0”
PLL Reference clock: MCKI
BICK frequency: 64fs
Sampling Frequency: 8kHz
(2) Stop the external clocks
(2) Stop the external clocks
(1) Addr:01H, Data:04H
(1) Addr:01H, Data:04H
[AK4632]
2005/06