MT9094 Mitel Networks Corporation, MT9094 Datasheet - Page 24

• Manufacturer Part Number: MT9094
• Description: ISO2-CMOS ST-BUS FAMILY Digital Telephone (DPhone-II)
• Manufacturer: Mitel Networks Corporation

MT9094
7-68
Generate DTMF tones
Description
select B-Channel of operation
reset DSP
set Rx DTMF gain (ie -20 dBm0)
set Tx audio gain (ie 0dB)
set Tx DTMF gain (ie -4dBm0)
write tone coefficient 1
write tone coefficient 2
start DTMF program
select transducers and filter/CODEC
(PuFC)
and turn off sidetone
optional:
set CODEC Rx gain
send tones in only Rx or Tx by
disabling
RxMUTE or TxMUTE appropriately
New Call Tone
Description
Assume that a B-Channel of operation has already been selected for the concurrent handset
conversation.
If this is not true select one.
select B-Channel of operation
reset DSP
set Rx gain (ie 0 dB with Tx autonull)
set Tx gain (ie 0dB)
Note: these two steps a required for the concurrent conversation only and do not affect new
call tone generation. See Standard Full-duplex handset call for required programming.
write tone coefficient 1
write tone coefficient 2
write warble rate coefficient
start new call tone ringer program
set new call tone gain
select speaker
enable new call tone
control ringer cadence by toggling
between gain control and tone ringer
with gain control programs
**********************************************************************************
**********************************************************************************
Address
15h
1Eh
20h
23h
24h
1Eh
0Eh
0Ah
1Eh
Address
1Eh
20h
23h
24h
0Bh
0Eh
0Fh
1Eh
1Dh
21h
15h
1Dh
26h
1Eh
bits 2 or 3 (as required)
00h
22h (or as required)
30h (or as required)
2Eh (or as required)
as required
as required
41h
as required
as required (0dB default)
as required
00h
30h (or as required)
as required
as required
as required
NCTG2-1 (as required)
02h
9Bh (assuming a concurrent handset
call)
01h (assuming all other bits are
71h (on)
31h (off)
71h (on) etc...
bits 2 or 3 (as required)
70h (or as required)
71h
DATA
DATA
-Law