AS3415 datasheet(69/102 Pages) AMSCO

69 / 102 page

ams Datasheet, Confidential: 2014-Jun-13 [v1-30]

AS3415/AS3435 – 69

Reg i st er Description

OTP Registers

Figure 87:

ANC_L2 Register Description

Figure 88:

ANC_R2 Register Description

Name

Address

Default Value

ANC_L2

0x10

80h

The ANC_L2 Register configures the gain for the left microphone input. This register is the first alternative

microphone gain register for OTP programming in case the ANC_L register is already programmed.

Bit

Bit Name

Default

Access

Bit Description

TEST_BIT_1

Test register. Please do not write this register.

5:0

MICL_VOL_OTP2<6:0>

000 0000

R/W

Volume settings for left microphone input,

adjustable in 63 steps of 0.5dB

00 0000: MUTE

00 0001: 0.5dB gain

00 0010: 1dB gain

00 0011: 1.5dB gain

…

11 1110: 30.5dB gain

11 1111: 31dB gain

Name

Address

Default Value

ANC_R2

0x11

00h

The ANC_R2 Register configures the gain for the right microphone input. This register is the first alternative

microphone gain register for OTP programming in case the ANC_R register is already programmed.

Bit

Bit Name

Default

Access

Bit Description

7ALT2_ENABLE

R/W

In case the register is being used for microphone

programming this bit has to be set. The bit is being

used by the internal state machine of the

AS3415/35 to determine which alternative

microphone gain register has to be used during

startup.

0: Microphone registers 0x10 and 0x11 are not

active

1: Microphone registers 0x10 and 0x11 are active.

Gain settings in registers 0x30 and 0x31 are

ignored

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