mh89760b Mitel, mh89760b Datasheet - Page 18

• Manufacturer Part Number: mh89760b
• Description: St-bus? Family T1/esf Framer & Interface
• Manufacturer: Mitel

MH89760B
4-72
From other
interfaces
Line Impedance
Inductance
Turns Ratio
Isolation
STi2
STo3
STo7
STi7
MT8980
MT8952
P
CDSTo
Parameter
RxCEN
TxCEN
CDSTi
STo0
STo1
STo2
STi0
STi1
INT0
INT1
C4i
F0i
CKi
Figure 11 - Typical Parameters of the Input and Output Transformers
V
V
DD
MHz Osc.
16.384
DD
C2
D Q
Q
C2
E8Ko
CSTo
DSTi0
DSTi1
IRQ
1SEC
FDLi
C2
MT8926
1
8
Figure 10 - Typical ESF Configuration
Line Side
O
O
D Q
CSTi1
CSTi0
DSTo
FDLo
C4b C2o F0b F0i CVb
Input Transformer
EClk
E8Ki
RxA
RxB
Q
(1-8):(3-6) 1:1
(1-8):(4-5) 1:1
C2i
F0i
(1-8) >2.2
C8Kb
•
1500
100
MT8941
MH89760B
•
•
To other
interfaces
C2o
}
RxA
RxB
E1.5o
F0i
C2i
CSTi1
E8Ko
CSTo
TxFDL
DSTi
CSTi0
DSTo
RxFDLClk
RxFDL
TxFDLClk
To other
Interfaces
O
O
O
O
XSt
MH89760B
6
4
5
3
LOS
LOS
OUTA
OUTB
C1.5i
RxT
RxR
5
2
MHz Osc.
1
6
12.352
To other T1 Interfaces
+12V
MH89760B
C2
O
O
O
O
Output Transformer
L2
(1-5):(4-8) 1.89:1
(2-6):(4-8) 1.89:1
(4-8) 0.46
1:
1:
1:
1:
•
•
1500
100
TR2
TR1
Preliminary Information
:0.5
Line Side
:1
•
C1
L1
R1=150
R2
R3 =4.7
C1 = 0.01 F, 5% 250V
C2 = 0.47 F, 5% 100V
L1 = 33 H, 130mA
L2 = 33 H, 165mA
TR1 & TR2 see Figures 6 & 11
O
O
4
8
4.7K
K
1%, 1/4w
T1 TRANSMIT
T1 RECEIVE
V(rms)
EIT
EIR
EA
EB
EC
SW
RCLT
RCHT
RCLR
RCHR
Ti
Ri
Units
MH89761
mH
TxT
TxR
TL
RL