MT8976 Mitel Networks Corporation, MT8976 Datasheet - Page 16

• Manufacturer Part Number: MT8976
• Description: ISO-CMOS ST-BUS FAMILY T1/ESF Framer Circuit
• Manufacturer: Mitel Networks Corporation

MT8976
4-44
%
Processor
MT8952
Micro
50
40
30
20
10
0
RxCEN
CDSTo
TxCEN
CDSTi
CKi
STo3
STi3
AAA AAA
AAA
0
AAA AAA
MT8980
AAA AA AA
ISO-CMOS
7 8
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
D Q
C2
AAA AAA
AAA
C2
STo0
STo1
STo2
STi0
STi1
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
Q
C4i
F0i
AAA AAA
AAA
AAA AAA
AAA AAA
10
C2
AAA AAA
AAA AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
D Q
AAA AA AA AAA
AAA
12
Percentage Reframe Time Probability Versus Reframe Time
Q
Figure 10 - Typical ESF Configuration
AAA AAA
AAA AAA
14
•
AAA AA AA AAA
Figure 9 - Reframe Time
AAA AAA
16
With Pseudo Random Data
AAA AA AA AAA
Reframe Time (msec)
AAA AAA
AAA AAA
18
AAA AAA
AAA
AAA
DSTi
DSTo
CSTi0
CSTo
CSTi1
F0i
C2i
C1.5i
TxFDL
TxFDLClk
RxFDL
RxFDLClk
E1.5i
AAA AA AA
AAA
AA AA
AA
20
AAA AAA
AAA
MT8976
Extractor
Clock
AAA AAA
AAA AAA
22
TxSF
RxSF
E8Ko
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
TxA
RxA
RxB
RxD
TxB
24
AA AA AAA
•
AAA AAA
•
1.544
MHz
AAA
AAA
AAA
AAA
AAA
AAA
AAA
•
26
AAA AAA
AAA
AAA
AAA
Receiver
Driver
•
Line
AAA AAA
AAA
Line
Tx
CVb
F0i
C2o
F0b
C4b
C8Kb
AAA AA AA AAA
28
MT8940/41
AAA AAA
AAA AA AA
30
AA AA
AA AA
AA
AA AA
AA AA
AA AA
AA AA
AA AA
AAAAAAAAAAAAAAAAAAAAAAAA
AAAA AAAA
AAAA
32
AAAA AAAA
MT8940/41
AAA AA AA AAA
AAA
AAAA AAAA
AAA AAA
MH89761
12.355/12.352
16.388/16.384
Equa-
lizer
34
AAA AAA
AAA
AAA
AAAA AAAA
MHz Osc.
MHz Osc.
ESF
D4
AAAA AAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAA
AA AA
AA AA
AA
AA AA
AA AA
AA AA
AA AA
AA AA
AAA
AAA
AAA
AAA
AAA
AAA