LC07424LP

No.A1619-19/32

Detailed Description of Registers

Reference voltage generator circuit

VREF_BIAS: Voltage REFerence BIAS

ADRS

Bit

Name

INIT

Description

00h

[7: 6]

VREF_BIAS[1: 0]

00b

Common reference voltage circuit setting (Vref_H_C and Vref_C pins)

11: Normal operation ‹*1›

10: VREF Rapid charging‹*1›

01: VREF pull-down

00: Power down

"9.1 Reference power supply, Line-out start / stop sequence" on page 31.

‹*1›"VREF rapid charge"setting allows rapid arrival at the target voltage through connection of resistor.

"Normal operation" setting enables power-saving operation through connection of standard resistor.

Logic synchronization clear

SYNC_CLR: SYNChronus CLeaR

ADRS

Bit

Name

INIT

Description

00h

[5]

SYNC_CLR

0b

Digital block synchronized reset control

1: Reset 0: Normal operation

This is used if the logic operation should become unstable,

and not used normally.

Power down circuit, Speaker output Control

SEL_PDX

: SELector Power Down (low active)

ALC_PDX

: ALC Power Down (low active)

ADC_A_PDX

: ADC Analog Power Down (low active)

DAC_A_PDX

: DAC Analog Power Down (low active)

VIDEO_PDX

: VIDEO Power Down (low active)

SP_OUTEN

: SPeaker OUTput ENable

SP_PDX

: SPeaker amp Power Down (low active)

MIX_PDX

: MIXer Power Down (low active)

LO_PDX

: Line Out Power Down (low active)

ADC_D_PDX

: ADC Digital Power Down (low active)

DAC_D_PDX

: DAC Digital Power Down (low active)

SP_EVR_PDX

: SPeaker EVR Power Down (low active)

ADRS

Bit

Name

INIT

Description

[4]

SEL_PDX

0b

Selector block power down

1: Normal operation 0: Power down

[3]

ALC_PDX

0b

ALC block power down

1: Normal operation 0: Power down

[2]

ADC_A_PDX

0b

ADC analog block power down

1: Normal operation 0: Power down

[1]

DAC_A_PDX

0b

DAC analog block power down

1: Normal operation 0: Power down

00h

[0]

VIDEO_PDX

0b

VIDEO power down

1: Normal operation 0: Power down

[7]

SP_OUTEN

0b

Speaker out enable

0: Speaker output stop 1: Normal operation

[6]

SP_PDX

0b

Speaker power down

1: Normal operation 0: Power down

[5]

MIX_PDX

0b

MIX power down

1: Normal operation 0: Power down

[4]

0

0b

0: Fixed

[3]

LO_PDX

0b

Line out power down

1: Normal operation 0: Power down

[2]

ADC_D_PDX

0b

ADC digital block power down

1: Normal operation 0: Power down

[1]

DAC_D_PDX

0b

DAC digital block power down

1: Normal operation 0: Power down

01h

[0]

SP_EVR_PDX

0b

Speaker EVR power down 1: Normal operation 0: Fixed at [SP_GAIN]=00h

When the circuit concerned is not used and the power saving function is to be made effective for this circuit, turn ON

the power DOWN function.