MT8924AS View Datasheet(PDF) - Mitel Networks

Part Name

Description

MFG CO.

MT8924AS

PCM Conference Circuit (PCC)

Mitel Networks 

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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