MT9300 데이터 시트보기 (PDF) - Mitel Networks
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MT9300 Datasheet PDF : 29 Pages
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MT9300
Advance Information
Echo Canceller A, Double-Talk Detection Threshold Register 2 Read/Write Address: 15h + Base Address
Echo Canceller B, Double-Talk Detection Threshold Register 2 Read/Write Address: 35h + Base Address
7
6
5
4
3
2
1
0
DTDT15 DTDT14 DTDT13 DTDT12 DTDT11 DTDT10 DTDT9 DTDT8
(DTDT)
Power Reset Value
48h
Echo Canceller A, Double-Talk Detection Threshold Register 1 Read/Write Address: 14h + Base Address
Echo Canceller B, Double-Talk Detection Threshold Register 1 Read/Write Address: 34h + Base Address
7
6
5
4
3
2
1
0
DTDT7 DTDT6 DTDT5 DTDT4 DTDT3 DTDT2 DTDT1 DTDT0
(DTDT)
Power Reset Value
00h
This register allows the user to program the level of Double-Talk Detection Threshold (DTDT). The 16 bit 2’s complement linear
value defaults to 4800h= 0.5625 or -5dB. The maximum value is 7FFFh = 0.9999 or 0 dB. The high byte is in Register 2 and
the low byte is in Register 1.
Echo Canceller A, Non-Linear Processor Threshold Register 2 Read/Write Address: 19h + Base Address
Echo Canceller B, Non-Linear Processor Threshold Register 2 Read/Write Address: 39h + Base Address
7
6
5
4
3
2
1
NLP15 NLP14 NLP13 NLP12 NLP11 NLP10 NLP9
0
NLP8
(NLPTHR)
Power Reset Value
0Bh
Echo Canceller A, Non-Linear Processor Threshold Register 1 Read/Write Address: 18h + Base Address
Echo Canceller B, Non-Linear Processor Threshold Register 1 Read/Write Address: 38h + Base Address
7
6
NLP7 NLP6
5
4
NLP5 NLP4
3
2
NLP3 NLP2
1
NLP1
0
NLP0
(NLPTHR)
Power Reset Value
60h
This register allows the user to program the level of the Non-Linear Processor Threshold (NLPTHR). The 16 bit 2’s complement
linear value defaults to 0B60h = 0.0889 or -21.0dB. The maximum value is 7FFFh = 0.9999 or 0 dB. The high byte is in
Register 2 and the low byte is in Register 1.
Echo Canceller A, Adaptation Step Size (MU) Register 2
Echo Canceller B, Adaptation Step Size (MU) Register 2
Read/Write Address: 1Bh + Base Address
Read/Write Address: 3Bh + Base Address
7
MU15
6
MU14
5
MU13
4
MU12
3
MU11
2
MU10
1
MU9
0
MU8
(MU)
Power Reset Value
40h
Echo Canceller A, Adaptation Step Size (MU) Register 1
Echo Canceller B, Adaptation Step Size (MU) Register 1
7
6
5
4
3
2
1
MU7
MU6
MU5
MU4
MU3 MU2
MU1
Read/Write Address: 1Ah + Base Address
Read/Write Address: 3Ah + Base Address
0
MU0 (MU)
Power Reset Value
00h
This register allows the user to program the level of MU. MU is a 16 bit 2’s complement value which defaults to 4000h = 1.0
The maximum value is 7FFFh or 1.9999 decimal. The high byte is in Register 2 and the low byte is in Register 1.
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