mt9074ap1 Zarlink Semiconductor, mt9074ap1 Datasheet - Page 20

• Manufacturer Part Number: mt9074ap1
• Description: T1/e1/j1 Single Chip Transceiver With Wide Dynamic Range Liu
• Manufacturer: Zarlink Semiconductor

Name
TX2-0
RRING
TRING
Transmit pulse amplitude. Select the TX2 –TX0 bits according to the line type, value of
termination resistors (RT), and transformer turns ratio used
TX2 TX1 TX0
After reset these bits are zero.
0
0
0
0
1
1
1
1
RTIP
TTIP
0
0
1
1
0
0
1
1
0.47 uF
0
1
0
1
0
1
0
1
Table 2 - Transmit Pulse Amplitude (E1)
120 Ω
75 Ω
+5 V
Figure 6 - Analog Line Interface (E1)
Line Impedance(
R
/
R
T
T
Zarlink Semiconductor Inc.
120 / 75
120
120
120
75
75
75
75 / 120
MT9074
20
Functional Description
Ω
)
1:1
1:2
0
0
0
0
15
12.1
9.1
12.1
RT(
Ω
)
Fuse
Fuse
Fuse
Fuse
Transformer Ratio
R
tor. Please check Table
2 for specific resistor
values.
1:2
1:1
1:2
1:2
1:2
1:1
1:2
1:2
T
: Termination resis-
Rx
Tx
Data Sheet