MT8924 데이터 시트보기 (PDF) - Mitel Networks
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MT8924 Datasheet PDF : 14 Pages
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Preliminary Information
MT8924
Instruction 1 : Channel Connection in Conference Mode
Control Signals
Data Bus
Comments
CS RD C/D WR D7 D6 D5 D4
0 1 0 0XXXS
0 1 0 0 X X IT C4
01
S:
P3-P0:
IT:
C4-C0:
A1-A0:
1 0 A1 A0 T1 T0
Conference Start Bit
Conference Number (1-10)
Insertion Tone Function Enable (IT=1)
Channel Number (0-31)
Channel Attenuation
00 = -0dB
01 = -3dB
10 = -6dB
D3 D2 D1 D0
P3 P2 P1 P0 Conference Number
C3 C2 C1 C0 PCM Channel Number and
Insertion Tone control
0 1 1 1 Opcode, Attenuation, and
Noise Suppression control
T1-T0:
T1/T0
00
01
10
11
Channel Noise Suppression
A-Law
µ-Law
no noise suppression
9/4096
9/8159
16/4096
16/8159
32/4096
32/8159
Instruction 2 : Channel Connection in Transparent Mode
Control Signals
Data Bus
Comments
CS RD C/D WR D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 0 X X X C4 C3 C2 C1 C0 PCM Channel Number
0 1 1 0 A1 A0 T1 T0 0 0 1 1 Opcode and Attenuation
T1-T0: see noise suppression description given for Instruction 1
Instruction 3 : Channel Disconnection
Control Signals
Data Bus
Comments
CS RD C/D WR D7 D6 D5 D4 D3 D2 D1 D0
0 1 0 0 X X X C4 C3 C2 C1 C0 PCM Channel Number
0 1 1 0 X X X X 1 1 1 1 Opcode
Instruction 4: Overflow Status Monitoring
Control Signals
Data Bus
Comments
CS RD C/D WR D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 1 CF CF CF CF CF CF CF CF Conferences 1 to 8
87654321
0 0 1 1 X X X X X X CF CF Conferences 9 to 10
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
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