MT9092 Datasheet, PDF (33/42 Pages) Mitel Networks Corporation – ISO2-CMOS ST-BUS™ FAMILY Digital Telephone with HDLC (HPhone-II)

MT9092
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
autonull)
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
Address
DATA
15h
bits 2 or 3 (as required)
1Eh
00h
1Dh
70h (or as required)
20h
30h (or as required)
1Eh
21h
0Eh
99h
0Bh
04h (for 0dB or as required)
0Ah
as required (0dB default)
0Fh
bits 1-5 (as required)
Address
DATA
15h
bits 2 or 3 (as required)
1Eh
00h
1Dh
38h (or as required)
20h
30 h (or as required)
1Eh
81h
0Eh
1Eh
0Ah
as required (0dB default)
0Fh
bits 1-5 (as required)
Address
DATA
15h
bits 2 or 3 (as required)
1Eh
00h
1Dh
70h (or as required)
20h
30h (or as required)
23h
as required
24h
as required
26h
as required
1Eh
61h
0Eh
82h
1Eh
61 (on)
69 (off)
61 (on)
69 (off) etc...
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