ak4532 AKM Semiconductor, Inc., ak4532 Datasheet - Page 12

• Manufacturer Part Number: ak4532
• Description: Internet/network/general Purpose Multimedia Audio Codec
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
4. Explanation of each sequence
4.1. Reset & Power down
• INIT1:
• INIT2:
• INITA:
• PD:
• Inhibit(1): Inhibits writing to all registers.
• Inhibit(2): Inhibits writing to all registers except for
• The AK4532 operates with the external clocks(MCLK, LRCK, SCLK) during initializing the
4.2.
“H”: Normal operation
“L”: Initializing mode 1(INIT1 in Figure 1)
4.3.
“1”: Normal operation
“0”: Initializing mode 2(INIT2 in Figure 1)
4.4.
“1”: Normal operation
“0”: Power down
4.5. SDO output pin operation
0178-E-02
Internal State
Write to register
External clock
analog section.
Power Supply
PD pin
PD(register)
RST(register)
MCLK,LRCK,SCLK
• Initializing all registers except
• Inhibits writing to all registers except
•
• The analog section is not initialized.
• The contents of all registers are held.
•
• All analog outputs(LOUT, ROUT) go floating.
• The initialization of the analog section starts at the rising edge of
• SDO pin stays “L” during the initializing period of 516/fs.
• Initializing all registers.
• Inhibits writing to all registers.
• The initialization of the analog section starts at rising edge of
• SDO pin stays “L” during the initializing periods of 516/fs.
• Going into power down state.
PD
RST
PD
RST
PD
pin operation
register operation
resister goes “1” when
register operation
register goes “1” when
Initializing all registers. The AK4532 exists in the power down state.
Power down state. All analog outputs are floating.
In case of
Initializing the analog section. Initializing period is 516/fs.
Initializing all registers except
INIT1
Inhibit(1)
Figure 1. Reset & Power Down Sequence
RST
register = “0”, initializing all registers except
INITA
PD
PD
PD
pin goes “L”
Normal
pin goes “L”.
,
The clocks may be stopped.
RST
PD
PD
registers.
PD
,
,
RST
RST
12
.
INITA
registers.
registers.
PD
,
Normal
RST
registers.
Inhibit(2)
INIT2
PD
PD
pin.
Normal PD+INIT2
resister.
PD
,
Inhibit(2
RST
registers.
INITA
[AK4532]
Normal
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