MT93L04A Zarlink Semiconductor, MT93L04A Datasheet - Page 39

• Manufacturer Part Number: MT93L04A
• Manufacturer: Zarlink Semiconductor

Preliminary Information
Echo Canceller A, Adaptation Step Size (MU) Register 2
Echo Canceller B, Adaptation Step Size (MU) Register 2
Echo Canceller A, Double-Talk Detection Threshold Register 2 Read/Write Address:
Echo Canceller B, Double-Talk Detection Threshold Register 2 Read/Write Address:
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:
Echo Canceller B, Non-Linear Processor Threshold Register 2 Read/Write Address:
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.
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.
Echo Canceller A, Adaptation Step Size (MU) Register 1
Echo Canceller B, Adaptation Step Size (MU) Register 1
Echo Canceller A, Double-Talk Detection Threshold Register 1 Read/Write Address:
Echo Canceller B, Double-Talk Detection Threshold Register 1 Read/Write Address:
Echo Canceller A, Non-Linear Processor Threshold Register 1 Read/Write Address:
Echo Canceller B, Non-Linear Processor Threshold Register 1 Read/Write Address:
NLP15
DTDT15 DTDT14 DTDT13
DTDT7
NLP7
MU15
MU7
7
7
7
7
7
7
NLP14
NLP6
MU6
MU14
DTDT6
6
6
6
6
6
6
NLP13
NLP5
MU13
MU5
DTDT5
5
5
5
5
5
5
NLP12
NLP4
MU12
MU4
4
4
DTDT4
DTDT12
4
4
4
4
NLP11
NLP3
MU11
MU3
3
3
DTDT11
3
3
DTDT3
3
3
NLP10
NLP2
MU2
MU10
2
2
2
2
DTDT2
DTDT10 DTDT9
2
2
NLP9
NLP1
MU9
MU1
1
1
1
1
DTDT1
1
1
NLP8
NLP0
MU8
MU0
0
0
0
0
DTDT0
DTDT8
0
0
Read/Write Address:
Read/Write Address:
Read/Write Address:
Read/Write Address:
(MU)
(NLPTHR)
(MU)
(NLPTHR)
(DTDT)
(DTDT)
Power Reset Value
Power Reset Value
Power Reset Value
15h
35h
14h
34h
Power Reset Value
19h
39h
18h
38h
1Bh
3Bh
1Ah
3Ah
Power Reset Value
Power Reset Value
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
48h
0Bh
40h
00h
MT93L04A
60h
00h
39