Preliminary Information

MT9196

7-147

Note: Bits marked "-" are reserved bits and should be written with logic "0".

Control bits b0 to b3 are used to configure the transmit path and select the transmit source. Note that for SSI mode all selections where

b3 = 1 are not used and are interpreted as b0 - b3 = 0 (i.e., transmit path off).

Destination

Source Programming

B1

0

0

0

0

0

0

0

0

0

0

0

0

1

1

1

1

0

0

1

1

0

0

1

1

0

1

0

1

0

1

0

1

Handset mic (M + /M -)

Handsfree mic (MIC +)

AUXin

Tx tones

Reserved

Reserved

Reserved

B2

1

1

1

1

1

1

1

1

0

0

0

0

1

1

1

1

0

0

1

1

0

0

1

1

0

1

0

1

0

1

0

1

Reserved

Handset mic (M + /M -)

Handsfree ic (MIC +)

AUXin

Tx Tones

Reserved

Reserved

Reserved

Transmit Path Control Register

ADDRESS = 12h WRITE/READ VERIFY

Power Reset Value

XXXX 0000

76543210

--

-

b1

b0

b3

-

b2

Control bits b0 to b7 are used to assign a signal source individually to each receive path output. In addition transmit to receive voice

sidetone path control is included.

Destination

Source Programming

Handset Speaker

0

0

1

1

0

1

0

1

Off

Rx Filter

AUXin

Reserved

Handsfree Speaker

0

0

1

1

0

1

0

1

Off

Rx Filter

AUXin

Reserved

Aux out

0

0

0

0

1

1

1

1

0

0

1

1

0

0

1

1

0

1

0

1

0

1

0

1

Off

Rx Filter

Reserved

AUXin

Handset mic (M+ /M -)

Handsfree mic (MIC +)

Reserved

Reserved

Voice Sidetone

0

1

Voice sidetone path disabled

Voice sidetone path enabled

Receive Path Control Register

ADDRESS = 13h WRITE/READ VERIFY

Power Reset Value

0000 0000

76543210

b7

b5

b4

b1

b0

b3

b6

b2