2.0 Circuit Description
Bt8370/8375/8376
2.9 Transmit Line Interface Unit
Fully Integrated T1/E1 Framer and Line Interface
Figure 2-47. Output Pulse Height versus Transmit Termination Impedance
Change in pulse height, normalized to Rterm = 51.1
1.6
1.5
1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
30
35
40
45
50
55
60
65
70
75
80
Rterm [ ]
2.9.4.3 Output Enable
The bipolar analog output XTIP/XRING can be enabled or disabled using the
XOE pin. This feature allows switching between multiple XTIP/XRING outputs
that are tied together.
2.9.5 Pulse Imbalance
In any window of 17 consecutive primary rate cycles, the maximum variation in
pulse amplitude in the absence of 60 Hz variations is <200 mV. The maximum
variation in pulse width at half amplitude is <20 ns.
2-82
Conexant
N8370DSE