Communications Controller
CMX850
Transmit and receive line level settings and the value of R11 and R14 are as for the 2-wire circuit.
R13, 16
R11, 14
R12
600Ω
See text
100kΩ
C3
100nF
C19
33nF
C23
100pF
Resistors ±5%, capacitors ±20%
Figure 4b Simplified 4-Wire Line Interface Circuit
© 2003 CML Microsystems Plc
16
D/850/6