MT8924

Preliminary Information

8-10

E:

Extra bit insertion (active when E=1)

F1 - F0:

PCM byte format selection (see Table 1)

00 = no bit inverted

01 = even bit (B0, B2, B4, B6) inverted

10 = odd bit (B1, B3, B5) inverted

11 = all bits (B0, B1, B2, B3, B4, B5, B6) inverted

P3 - P0:

channel mode operation information

A1 - A0:

see channel attenuation description

0000 = no connection

for Instruction 1

1111 = transparent mode

T1 - T0:

see noise suppression description

1010 - 0001 = conference mode

for Instruction 1

P3 - P0 provides conference number

Note:

Instruction 6 enables the data bus to read the status until reset by C/D=0, WR=1, and CS=0

Instruction 5 : PCM Operating Mode Selection

Control Signals

Data Bus

Comments

CS

RD

C/D

WR

D7

D6

D5

D4

D3

D2

D1

D0

0110

X

E

F1

F0

0101

see Table 1

Instruction 6 : Status Monitoring

Control Signals

Data Bus

Comments

CS

RD

C/D

WR

D7

D6

D5

D4

D3

D2

D1

D0

0100

X

X

X

C4

C3

C2

C1

C0

0110

XXXX

0110

0011

P3

P2

P1

P0

A1

A0

T1

T0