AS2533_11 Datasheet, PDF (3/26 Pages) ams AG – Multi-Standard CMOS Telephone IC for Basic Telephones

Data Sheet AS2533-36
austriamicrosystems
Pin Description
Pin # Symbol
Function
4
VDD Positive Voltage Supply
This is the supply pin for the circuit.
5
AGND _{Analog Ground}
This is the analogue ground for the amplifiers.
6
STB _{Side Tone Balance Input}
lid ^{This is the input for side tone cancellation.}
7
CI _{Complex Impedance Pin}
For complex impedance a capacitor should be connected to
a ₈
MO _{Melody Output}
v _{PDM output of the melody generator for tone ringing with internal open-drain transistor.}
ill ^{Hi-Z when not active.}
9
LLC _{Line Loss Compensation}
Select pin for line loss compensation (see also Figure 6 and Figure 7).
t _{LLC = AGND : 20 - 50 mA LLC = VDD : 45 - 75 mA LLC = VSS : none.}
G _{s 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
A ^t _{during break periods of pulse dialing and flash.}
s ^{n 11}
OSC _{OSCillator Input}
Pin for ceramic resonator (3.58 MHz).
e _{Reference: Murata CSTCC3M58GD3346-R0 SMD}
m ^{t Murata CSTLS3M58GD3458-B0 Lead}
a ^{n 12}
MODE _{Signaling MODE Select Input}
Mode pin Function
o _Open
Dialing inhibited
c _{Row 1}
LD mode, 10 pps, 33/66 ms
l ^{Row 2}
LD mode, 10 pps, 40/60 ms
Row 3
LD mode, 20 pps, 33/66 ms
a _{Row 4}
LD mode, 20 pps, 40/60 ms
ic^{Row 5}
LD mode, 10 pps, 33/66 ms, Temp. MF with tone on first * key entry
Row 61
MF only, 82/82 ms
n_{Row 7}
MF only, 82/160 ms
ch ^{During temporary MF: 82/160 ms}
13
C4 Keyboard Columns
e₁₄
C3 (see key arrangements in Figure 2, Figure 3 and Figure 4)
T¹⁵
C2
16
C1
Revision 8.10
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