Preliminary Information
MT8924
Instruction 1 : Channel Connection in Conference Mode
Control Signals
Data Bus
Comments
CS
0
RD C/D WR D7
D6
X
D5
X
D4
S
D3
P3
C3
D2
P2
C2
D1
P1
C1
D0
1
1
0
0
0
0
X
X
P0 Conference Number
0
X
IT
C4
C0 PCM Channel Number and
Insertion Tone control
0
1
1
0
A1
A0
T1
T0
0
1
1
1
Opcode, Attenuation, and
Noise Suppression control
S:
P3-P0:
IT:
C4-C0:
A1-A0:
Conference Start Bit
Conference Number (1-10)
Insertion Tone Function Enable (IT=1)
Channel Number (0-31)
Channel Attenuation
00 = -0dB
T1-T0:
Channel Noise Suppression
A-Law µ-Law
no noise suppression
T1/T0
00
01
10
11
9/4096
9/8159
16/4096
32/4096
16/8159
32/8159
01 = -3dB
10 = -6dB
Instruction 2 : Channel Connection in Transparent Mode
Control Signals
Data Bus
Comments
CS
0
RD C/D WR D7
D6
X
D5
X
D4
C4
T0
D3
C3
0
D2
C2
0
D1
C1
1
D0
C0 PCM Channel Number
1
1
0
1
0
0
X
0
A1
A0
T1
1
Opcode and Attenuation
T1-T0: see noise suppression description given for Instruction 1
Instruction 3 : Channel Disconnection
Control Signals
Data Bus
Comments
CS
0
RD C/D WR D7
D6
X
D5
X
D4
C4
X
D3
C3
1
D2
C2
1
D1
C1
1
D0
1
1
0
1
0
0
X
X
C0 PCM Channel Number
0
X
X
1
Opcode
Instruction 4: Overflow Status Monitoring
Control Signals
Data Bus
Comments
CS
0
RD C/D WR D7
D6
D5
D4
D3
D2
D1
D0
0
0
1
CF
8
CF
7
CF
6
CF
5
CF
4
CF
3
CF
2
CF Conferences 1 to 8
1
0
0
1
1
X
X
X
X
X
X
CF
10
CF Conferences 9 to 10
9
CF10 - CF1 : Conference is in overflow when bit is HIGH
Note : as long as RD remains LOW, the overflow status of the conference selected by C/D can be monitored in real time
8-9
MITEL [ MITEL NETWORKS CORPORATION ]
