mt9094apr1 Zarlink Semiconductor, mt9094apr1 Datasheet - Page 27

• Manufacturer Part Number: mt9094apr1
• Description: Fully Featured Digital Telephone Circuit With Embedded Dsp For Tone Generation And Hands Free Operation
• Manufacturer: Zarlink Semiconductor

Programming Examples
Some examples of the programming steps required to set-up various telephony functions are given. Note that these
steps are from the power-up reset default definition. If some other state is currently true then some programming
steps may be omitted while new ones may be required.
Standard Full-duplex handset call
Description
select B-Channel of operation
reset DSP
set Rx gain (ie 0dB with Tx
set Tx gain (ie 0dB)
start Rx gain program
select transducers and turn on
sidetone and filter/CODEC
set sidetone gain
optional:
set CODEC Rx and Tx gain
select A-Law versus µ-Law
Half-Duplex handsfree operation
Description
select B-Channel of operation
reset DSP
set Rx gain (ie 12 dB)
set Tx gain (ie 0dB)
start handsfree program
select transducers and filter/CODEC
and turn off sidetone
optional:
set CODEC Rx and Tx gain
select A-Law versus µ-Law
Generate tone ringer
Description
select B-Channel of operation
reset DSP
set Rx gain (ie 0 dB with Tx
autonull)
set Tx gain (ie 0dB)
write tone coefficient 1
write tone coefficient 2
write warble tone rate coefficient
start tone ringer program
select speaker and filter/CODEC
and turn off sidetone
control ringer cadence by toggling
RxMUTE
autonull)
Zarlink Semiconductor Inc.
MT9094
Address
Address
Address
15h
1Eh
1Dh
20h
1Eh
0Eh
0Bh
0Ah
0Fh
15h
1Eh
1Dh
20h
1Eh
0Eh
0Ah
0Fh
15h
1Eh
1Dh
20h
23h
24h
26h
1Eh
0Eh
1Eh
27
bits 2 or 3 (as required)
00h
70h (or as required)
30h (or as required)
21h
99h
04h (for 0dB or as required)
as required (0dB default)
bits 1-5 (as required)
bits 2 or 3 (as required)
00h
38h (or as required)
30 h (or as required)
81h
1Eh
as required (0dB default)
bits 1-5 (as required)
bits 2 or 3 (as required)
00h
70h (or as required)
30h (or as required)
as required
as required
as required
61h
82h
61 (on)
69 (off)
61 (on)
69 (off) etc...
DATA
DATA
DATA
Data Sheet