AS3525 datasheet(133/194 Pages) AMSCO

133 / 194 page

AS3525-A/-B C22O22

Data Sheet, Confidential

www.austriamicrosystems.com

Revision 1.13

133

- 194

7.4.6.8

Table 113 Headphone Related Register

Name

Base

Offset

Description

AudioSet_3

I2C audio master

0x16

Power save options, common mode buffer

IRQ_ENRD_1

I2C audio master

0x26

Interrupt settings for over current and HP detection

Table 114 HPH_OUT_R Register

Name

Base

Default

HPH_OUT_R

I2C audio master

0x00

Right Headphone Output Register

Offset: 0x02

This register is reset at a DVDD-POR.

Bit

Bit Name

Default

Access

Bit Description

7:6

HP_OVC_TO

R/W

headphone over current time out:

11: 0 ms

10: 512 ms

01: 128 ms

00: 256 ms

n/a

do not change

4:0

HPR_VOL

00000

R/W

volume settings for right headphone output,

adjustable in 32 steps @ 1.5dB

11111: 1.07 dB gain

11110: -0.43 dB gain

00001: -43.93 dB gain

00000: -45.43 dB gain

Table 115 HPH_OUT_L Register

Name

Base

Default

HPH_OUT_L

I2C audio master

0x00

Left Headphone Output Register

Offset: 0x03

This register is reset at a DVDD-POR.

Bit

Bit Name

Default

Access

Bit Description

HP_Mute_on

R/W

0: normal operation

1: headphone output set to mute (mute is on during power-up)

HP_on

R/W

0: headphone stage not powered

1: power up headphone stage

HPdet_on

R/W

0: no headphone detection

1: enable headphone detection

4:0

HPL_VOL

00000

R/W

volume settings for left headphone output,

adjustable in 32 steps @ 1.5dB

11111: 1.07 dB gain

11110: -0.43 dB gain

00001: -43.93 dB gain

00000: -45.43 dB gain

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