MT8972B Mitel Networks Corporation, MT8972B Datasheet - Page 13

• Manufacturer Part Number: MT8972B
• Description: (MT8971B) ISO2-CMOS ST-BUS FAMILY Digital Subscriber Interface Circuit Digital Network Interface Circuit
• Manufacturer: Mitel Networks Corporation

F0
L
Note: Last bit sent was a logic 0
OUT
F0
L
OUT
Line Signal
Differential
Differential
NRZ Data
Encoded
Encoded
Transmit
Biphase
SYNC HK0
Data
Bits
B1
7
A
A A
A
A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A
A A
A
A
A A
A A
A A
A A
A A
A
A A
A A
A A
A A
A A A
SYNC
Bit 7
D
1
1
Figure 12 - Frame Format - 160 kbit/s (Modes 0, 2, 3, 4, 6)
D
Figure 11 - Frame Format - 80 kbit/s (Modes 0, 2, 3, 4, 6)
0
D
A
AA
AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA
AA AA
AA AA
AA AA
AA AA
AA AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA AA AA
0
B1
Bit 6
0
1
B1
B1
1
0
Figure 10 - Data & Line Encoding
A
A
A
A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A
A A
A
A
A A
A A
A A
A A
A A
A
A A
A
A A
A A
A A
A A A
B1
2
Bit 5
B1
1
B1
3
1
B1
A
AA
AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA
AA AA
AA AA
AA AA
AA AA
AA AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA AA AA
4
B1
B1
Bit 4
2
0
5
B1
6
B1
A
A
A
A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A
A A
A
A
A A
A A
A A
A A
A A
A
A A
A
A A
A A
A A
A A A
B1
3
7
Bit 3
0
B2
B1
0
4
B2
AA
AA AA
AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA
AA AA
AA AA
AA AA
AA AA
AA AA
AA
AA AA
AA AA
AA AA
AA AA
A A A AA
1
B2
Bit 2
B1
1
2
5
B2
3
A
A
A
A
A A
A
A A
A
A
A A
A
A
A A
A
A A
A A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A A
A A
A A
A
A A
A A
A A
A A
A A A
B1
B2
MT8971B/72B
Bit 1
6
4
0
B2
5
B1
A
AA AA
AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA
AA AA
AA
AA AA
AA
AA AA
AA AA
AA AA
AA
AA AA
AA AA
AA AA
AA AA
AA AA AA
B2
7
6
Bit 0
B2
0
SYNC
7
SYNC
A
A
A
A
A A
A
A A
A
A
A A
A
A
A A
A
A A
A A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A
A A
A
A A
A
A A
A A
A A
A
A A
A A
A A
A A
A A A
V
Bias
9-119