Bell 202 Compatible Modem
FX614
1.2
Block Diagram
Figure 1 Block Diagram
1.3
Signal List
FX614
D4/P3
Pin No.
1
2
3
Signal
Description
Name
XTALN
XTAL/CLOCK
M0
Type
O/P
I/P
I/P
The output of the on-chip Xtal oscillator inverter.
The input to the on-chip Xtal oscillator inverter.
A logic level input for setting the mode of the
device. See section 1.5.2.
A logic level input for setting the mode of the
device. See section 1.5.2.
Input to the Rx input amplifier.
Output of the Rx input amplifier, and the input to
the Rx filter.
The output of the FSK generator.
The negative supply rail (ground).
4
M1
I/P
5
6
RXIN
RXFB
I/P
O/P
7
8
TXOP
V
SS
O/P
Power
©
1997 Consumer Microcircuits Limited
3
D/614/4
CMLMICRO [ CML MICROCIRCUITS ]
