Datasheet

Data Sheet ADAU1772

Rev. B | Page 103 of 116

Table 94. Bit Descriptions for OP_STAGE_CTRL

Bits Bit Name Settings Description Reset Access

5 HP_EN_R Sets the right channel in line output or headphone mode. 0x0 RW

Right output in line output mode

1 Right output in headphone mode

4 HP_EN_L Sets the left channel in line output or headphone mode. 0x0 RW

0 Left output in line output mode

1 Left output in headphone output mode

[3:2] HP_PDN_R Output stage power control. Powers down the right output stage, regardless

of whether the device is in line output or headphone mode. After enabling

the headphone output, wait at least 6 ms before unmuting the headphone

output by setting HP_MUTE_R in the OP_STAGE_MUTES register to 00.

0x3 RW

00 HPOUTRN/LOUTRN and HPOUTRP/LOUTRP outputs enabled

01 HPOUTRN/LOUTRN enabled, HPOUTRP/LOUTRP disabled

HPOUTRN/LOUTRN disabled, HPOUTRP/LOUTRP enabled

11 Right output stages powered down

[1:0] HP_PDN_L Output stage power control. Powers down the left output stage, regardless

of whether the device is in line output or headphone mode. After enabling

the headphone output, wait at least 6 ms before unmuting the headphone

output by setting HP_MUTE_L in the OP_STAGE_MUTES register to 00.

0x3 RW

00 HPOUTLN/LOUTLN and HPOUTLP/LOUTLP outputs enabled

01 HPOUTLN/LOUTLN enabled, HPOUTLP/LOUTLP disabled

10 HPOUTLN/LOUTLN disabled, HPOUTLP/LOUTLP enabled

11 Left output stages powered down