FX651 Consumer Microcircuits Limited, FX651 Datasheet - Page 5

• Manufacturer Part Number: FX651
• Description: Spm And Security Subsystem
• Manufacturer: Consumer Microcircuits Limited

SPM and Security Subsystem
1997 Consumer Microcircuits Limited
Package
Notes:
Pin No.
3, 15
D4
10
11
12
13
14
16
I/P
O/P =
AMPOP
NEGIP
POSIP
DETECT
18kHz
DETECT
12kHz
V
N/C
DD
Name
=
Input
Output
Signal
POWER
Type
O/P
O/P
O/P
I/P
I/P
The input amplifier's output. External
components are used in conjunction with the
amplifier to couple the line signal into the device.
Both inputs are available to allow a differential
configuration because a two wire input is
assumed.
The input amplifier's inverting input.
The input amplifier's non inverting input.
The logic output of the 18kHz channel which is
active in Rx mode. Logic "0" signals the
presence on the line of 18kHz tone within
specified frequency and amplitude limits.
The logic output of the 12kHz channel. It goes
to logic "0" when a 12kHz tone within specified
frequency and amplitude limits has been
detected for a minimum length of time.
The positive supply rail. Levels and voltages are
dependent upon this supply. This pin should be
decoupled to V
(see Figure 1).
No internal connection: leave open circuit.
5
SS
by a capacitor
Description
D/651/4
FX651