MH89770
Preliminary Information
MH89770
DIP SWITCH
MT8980
MT8977
OUTA
Tx
Line
Driver
STo0
DSTi
STi3
TxA
TxB
EQU
STi0
STo1
DSTo
STo3
OUTB
RxT
CSTi0
CSTo
STi1
STo2
C4i
MH89761
CSTi1
RxA
RxB
F0i
RX
Line
Receiver
F0i
•
•
C2i
•
C1.5i
RxR
MT8952
TxFDL
CDSTo
TxFLDClk
RxFDL
RxD
•
CDSTi
Cki
TxSF
RxSF
E8Ko
RxFDLClk
E1.5i
CLOCK
EXTRACTOR
MT8941
12.352 MHz
Osc.
1.544 MHz
CVb
F0i
Micro
Processor
C2o
F0b
16.384 MHz
Osc.
•
C4b
C8Kb
Figure 10 - Typical ESF Configuration
MH89770
Line Side
MH89770
Line Side
•
•
•
1
•
O
O
4
8
1
8
3
O
O
5
6
4
O
O
O
O
•
•
2
O
6
O
O 5
O
Parameter
Input Transformer
Output Transformer
Units
Line Impedance
Inductance
100
100
Ω
(1-8) >2.2
(4-8) 0.46
mH
Turns Ratio
(1-8):(3-6) 1:1
(1-8):(4-5) 1:1
(1-5):(4-8) 1.89:1
(2-6):(4-8) 1.89:1
Isolation
1500
1500
V(rms)
Figure 11 - Typical Parameters of the Input and Output Transformers
4-142
MITEL [ MITEL NETWORKS CORPORATION ]
