MB86437 Datasheet, PDF (19/35 Pages) Fujitsu Component Limited. – 3 V Single Power Supply Audio Interface Unit (AIU)

MB86437
5. Power-Save Mode
This section describes the setting methods and states.
(1) Mode setting
Power-save mode can be controlled by an external control signal and register setting.
The various modes set each block to a power-save state, enabling the power consumption to be reduced.
• Power-save mode setting table
Mode
Address
PS
or ^{00100 00101 00110}
10000
10001
SYNC
or
CLK
Address
10111
D4 D0 D4 D2 D1 D0 D4 D3 D2 D1 D4 D2 D1 D0 STOP
Reception
All PD
0 –– – ––––––––––– –
VREF
operation
1 –– – –––––0––––– –
SGO PD
1 –– – –––––1––––– –
TONE
operation
1 –– – ––––0–––––– –
CODEC,
TONE PD
1 –– – –––11–––––– –
CODEC
operation
1 –– – –––0–––––––
CODEC
SYNC PD
1 –– – –––0–––––––
Transmission
operation
1
–– – ––––––0––––
–
Transmission
PD
1
–– – ––––––1––––
–
1 1– 1 11101––0100 –
Reception
operation
1 0– 1 11001––0100 –
1 0– 1 10101––0001 –
1 1– 0 00001––1100 –
1 0– 1 11101––1111 –
––––––––
––––––––
–––
––––
––
–– – ––––
–– – ––––
–
–––––––
–
–––––––
–– –
–– –
–– –
–– –
–– –
: Operation enabled, : Changes depending on address 10001, : Power-down
Note: Powering down the CODEC or TONE generator powers down the entire reception block.
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