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DCI2 • 24

OUTPUT SIGNAL DESCRIPTION

This section describes the various outputs of the DCI2.

Full DTMF Configuration

Note that the Data Valid signal, J2 pin 9 , for the Full DTMF configuration is a

low pulse. In the non-latched configuration when valid data is detected the 4

data lines are set, data valid is pulsed low and the data lines are then all set

high. In the latched configuration when valid data is detected the 4 data lines

are set, data valid is pulsed low and data lines will remain set until the next

valid DTMF tone is detected.

J2 –1

DataValid

J2—3

J2—5

J2—7

1

0

1

0

1

1

1

0

DTMF 0

DTMF A

LATCHED TIMING

10mS

300mS

10mS

10mS

300mS

10mS

J2 –1

DataValid

J2—3

J2—5

J2—7

1

0

1

0

1

1

1

0

DTMF 0 DTMF A

NON-LATCHED TIMING

10mS

300mS

10mS

10mS

300mS

10mS

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