Preliminary Information
MT93L16
Address:
22h Read
Acoustic Echo Canceller Status Register (ASR) (* Do not write to this register)
7
6
5
4
3
2
1
0
Power Up
Reset 00h
-
ACMUND
NBS
HWLNG
-
DT
NLPDC
NB
MSB
LSB
NBS
When high, the Narrowband signal has been detected in the Sin/Sout path and when low, the Narrowband signal has not
been detected in the Sin/Sout path
NB
LOGICAL OR of the status bit NBS + NBR from LSR Register
When high the Double Talk is detected and when low, the Double talk is not detected
When high, the NLP is activated and when low the NLP is not activated
RESERVED.
DT
NLPDC
-
HWLNG
ACMUND
-
When high, Howling is occurring in the loop and when low, no Howling is detected
When high, No active signal in the Rin/Rout path
RESERVED.
Address:
02h Read
Line Echo Canceller Status Register (LSR) (* Do not write to this register)
Power Up
Reset 00h
6
5
4
3
2
1
0
-
-
NLPC
DT
-
-
NB
NBR
LSB
NBR
When high, a narrowband signal has been detected in the Receive (Rin) path. When low no narrowband signal is not
detected in the Rin path
NB
This bit indicates a LOGICAL-OR of Status bits NBR + NBS (from ASR Register)
When high, double-talk is detected and when low double-talk is not detected
When high, NLP is activated and when low NLP is not activated
DT
NLPC
-
-
RESERVED.
.
-
--
Address:
20h R/W
Receive Gain Control Register (RGC)
7
6
5
4
3
2
1
0
Power Up
Reset 6Dh
GO
-
-
G3
G2
-
-
G1
MSB
LSB
G0
G1
G2
G3
-
User Gain Control on the Rin/Rout path (Tolerance of gains: +/- 0.15 dB).
The hexadecimal number represents G3 to G0 value in the table below.
-
RESERVED
-
-
Gain Values for Receive Gain Control Register Bit G3 to G0 (RGC)
0h
1h
2h
3h
-24dB
-21dB
-18dB
-15dB
4h
5h
6h
7h
-12dB
-9 dB
-6 dB
-3 dB
8h
9h
Ah
Bh
0 dB
Ch
Dh
Eh
Fh
+12 dB
+ 3 dB
+ 6 dB
+9 dB
+ 15 dB
+ 18 dB
+ 21 dB
19
MITEL [ MITEL NETWORKS CORPORATION ]
