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STw5094

Control Register CR2 Functions (Address: 0x02)

(1) Significant in companded mode only.

Control Register CR3 Functions (Address: 0x03)

(1) Significant in companded mode only.

Control Register CR4 Functions (Address: 0x04)

*: state at power on initialization

(1) When the single ended line input MIC3 is selected, microphone gain must be set to 0dB (PG=1, TXA=0000).

Control Register CR5 Functions (Address: 0x05)

*: state at power on initialization

X: reserved: write 0

(1): Valid only when Voice Data Fs=8kHz (VFS=0). When Voice data Fs=16kHz (VFS=1) The High Pass Filter is always disabled.

765432

10

Function

DRD(7:0)

msb

lsb

Data sent to Receive path or Data received from DR input (1)

765432

10

Function

DXD(7:0)

msb

lsb

DX data transmitted (1)

765432

10

Function

MS(1:0)

MB

PG

TXA(3:0)

0

0

1

1

0

1

0

1

Transmit input muted

*

MIC1 Selected

MIC2 Selected

MIC3 Selected

(1)

0

1

MBIAS output disabled

*

MBIAS output enabled

0

1

20dB preamplifier gain

*

0dB preamplifier gain

(1)

0

0

-

1

0

0

-

1

0

0

-

1

0

1

-

1

0 dB Transmit Amplifier gain

(1)*

1.5 dB Transmit Amplifier gain

Transmit Amplifier in 1.5 dB step

22.5 dB Transmit Amplifier gain

765432

10

Function

HPB

SI

SA(3:0)

XX

0

1

Voice Codec Receive High Pass filter enabled

(1) *

Voice Codec Receive High Pass filter disabled

0

1

Voice Codec internal sidetone disabled

*

Voice Codec internal sidetone enabled

0

0

-

1

0

0

-

1

0

0

-

1

0

1

-

1

-12.5 dB Sidetone gain

*

-13.5 dB Sidetone gain

Sidetone gain in 1 dB step

-27.5 dB Sidetone gain