FX651 datasheet(5/16 Pages) CMLMICRO

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SPM and Security Subsystem

FX651

D/651/4

Package

Signal

Description

Pin No.

Name

Type

AMPOP

O/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.

NEGIP

I/P

The input amplifier's inverting input.

POSIP

I/P

The input amplifier's non inverting input.

DETECT

18kHz

O/P

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.

DETECT

12kHz

O/P

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.

VDD

POWER

The positive supply rail. Levels and voltages are

dependent upon this supply. This pin should be

decoupled to VSS by a capacitor

(see Figure 1).

3, 15

N/C

No internal connection: leave open circuit.

Notes:

I/P

Input

O/P

Output

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