STw5093

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Table 7. Control Register CR5 Functions

*: state at power on initialization

Table 8. Control Register CR6 Functions

*: state at power on initialization

Table 9. Control Register CR7 Functions

*:

state at power on initialization

(2):

value provided if f1 or f2 is selected alone.if f1 and f2 are selected in the summed mode, f1=0.89 Vpp while f2=0.7 Vpp.

X

reserved: write 0

7654

3210

Function

Transmit amplifier

Sidetone amplifier

0

0

-

1

0

0

-

1

0

0

-

1

0

1

-

1

lsb

0 dB gain

*

1.5 dB gain

in 1.5 dB step

22.5 dB gain

0

0

-

1

0

0

-

1

0

0

-

1

0

1

-

1

-12.5 dB gain

*

-13.5 dB gain

in 1 dB step

-27.5 dB gain

7654

3210

Function

Earpiece ampifier

[EARA]

Extra amplifier [EXTA]

0

0

-

1

0

0

-

1

0

0

-

1

0

1

-

1

lsb

0 dB gain

*

-2 dB gain

in 2 dB step

-30 dB gain

0

0

-

1

0

0

-

1

0

0

-

1

0

1

-

1

0 dB gain

*

-2 dB gain

in 2 dB step

-30 dB gain

76

5432

10

Function

Tone gain

F1

F2

SN

DE

Attenuation

0

0

0

0

0

0

0

0

1

1

0

0

0

0

1

1

1

1

X

X

0

0

1

1

0

0

1

1

X

X

0

1

0

1

0

1

0

1

0

1

0 dB *

-3 dB

-6 dB

- 9 dB

-12 dB

-15 dB

-18 dB

-21 dB

-24 dB

-27 dB

1.6(2)

0.066

1.26(2)

0.053

0

0

1

1

0

1

0

1

f1 and f2 muted

*

f2 selected

f1 selected

f1 and f2 in summed mode

0

1

Squarewave signal selected

*

Sinewave signal selected

0

1

Normal operation

Tone / Ring Generator connected toTransmit path

*