TABLE 1. I

B7

B6

B5

B4

B3

B2

B1

B0

I

Address

1101

1

0

ID

0

Mode

Control

Register

000

HP

Control

Gain Sel

Mode

Mute

Shutdown

Volume

Control

Register

(See

Table 4 )

1

0

0

V4

V3

V2

V1

V0

TABLE 2. Headphone Control

HP Sense Pin

I

Output Stage Configuration

0

0

BTL

01

SE

1(V

SE

1(V

SE

TABLE 3. Logic Controls

Logic Level

B3 (Gain Sel)

B2 (Mode)

B1 (Mute)

B0 (Shutdown)

I

0

Internal Gain

Fixed Volume, 0dB

Mute Off (Play)

Device Shutdown

I

1

External Gain

Adjustable Volume

Mute On

Device Active

SPI mode

Note 18: If system beep is detected on the Beep In pin, the system beep will be passed through the bridged amplifier regardless of the logic of the Mute and HP

Control bits (B1, B4) and HP Sense pin.

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