MF DIGITAL Scribe EC Standalone Series Bedienungsanleitung PDF herunterladen (Seite 3)

Data Sheet AS25 33-36 austriamicrosystems

Revision 8.10 Page 2 of 25

Pin Description

Pin # Symbol Function

4 V

Positive Voltage Supply

This is the supply pin for the circuit.

5 A

GND

Analog Ground

his is the analogue ground for the amplifiers.

6 STB

Side Tone Balance Input

This is the input for side tone cancellation.

7 CI

Complex Impedance Pin

For complex impedance a capacitor should be connected to

8 MO

Melody Output

PDM output of the melody generator for tone ringing with internal open-drain transistor.

Hi-Z when not active.

9 LLC

Line Loss Compensation

Select pin for line loss compensation (see also Figure 6 and Figure 7).

LLC = A

GND

: 20 - 50 mA LLC = V

: 45 - 75 mA LLC = V

: none.

10 HS/DP

Hook Switch Input and Dial Pulse Output

This is an I/O that is pulled high by the hook switch when off-hook and an open drain pulls it low

during break periods of pulse dialing and flash.

11 OSC

OSCillator Input

Pin for ceramic resonator (3.58 MHz).

Reference: Murata CSTCC3M58GD3346-R0 SMD

Murata CSTLS3M58GD3458-B0 Lead

12 MODE

Signaling MODE Select Input

Mode pin Function

Open Dialing inhibited

Row 1 LD mode, 10 pps, 33/66 ms

Row 2 LD mode, 10 pps, 40/60 ms

Row 3 LD mode, 20 pps, 33/66 ms

Row 4 LD mode, 20 pps, 40/60 ms

Row 5 LD mode, 10 pps, 33/66 ms, Temp. MF with tone on first * key entry

Row 61 MF only, 82/82 ms

Row 7 MF only, 82/160 ms

During temporary MF: 82/160 ms

Keyboard Columns

(see key arrangements in Figure 2, Figure 3 and Figure 4)

ams AG

Technical content still valid

1 2 3 4 5 6 7 8 ... 25 26

Technical content still valid 10

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