MH89760B
Preliminary Information
To other
interfaces
From other
interfaces
C8Kb
C2o
16.384
MHz Osc.
12.352
MHz Osc.
MT8941
C4b C2o F0b F0i CVb
T1 TRANSMIT
To other T1 Interfaces
MH89761
EIT
To other
Interfaces
}
MT8980
TxT
EIR
EA
EB
EC
SW
C4i
F0i
STi2
TxR
STo3
MT8926
RxA
MH89760B
STo0
STo1
STi0
STo2
STi1
C1.5i
RxA
E8Ko
TR1
STo7
STi7
RxB
EClk
F0i
RxB
E1.5o
F0i
OUTA
CSTo
DSTi0
DSTi1
+12V
RCLT
RCHT
RCLR
RCHR
Ti
1:
L2
VDD
C2i
C2i
:0.5
L1
C1
TL
C2
CSTi1
E8Ki
CSTi0
FDLo
DSTo
CSTi1
E8Ko
CSTo
TxFDL
DSTi
IRQ
1SEC
1:
µP
RL
Ri
INT0
INT1
OUTB
RxT
TR2
FDLi
VDD
CSTi0
DSTo
RxFDLClk
RxFDL
TxFDLClk
1:
1:
MT8952
CDSTo
:1
T1 RECEIVE
D Q
Q
D Q
Q
RxR
C2
C2
XSt LOS
TxCEN
R1=150Ω, 1%, 1/4w
R2 = 4.7KΩ
RxCEN
CDSTi
R3 =4.7KΩ
LOS
C1 = 0.01µF, 5% 250V
C2 = 0.47µF, 5% 100V
L1 = 33µH, 130mA
CKi
C2
L2 = 33µH, 165mA
TR1 & TR2 see Figures 6 & 11
Figure 10 - Typical ESF Configuration
MH89760B
Line Side
MH89760B
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
4-72
MITEL [ MITEL NETWORKS CORPORATION ]
