AS2540Q AMSCO [austriamicrosystems AG], AS2540Q Datasheet - Page 2

• Manufacturer Part Number: AS2540Q
• Description: Remote Controlled Single-Chip-Telephone
• Manufacturer: AMSCO [austriamicrosystems AG]

Data Sheet AS2540
Pin Description
Revision 3.1
Pin #
15
16
17
18
19
28
11
7
5
6
2
3
8
4
Symbol
MODE
MHS
RFD
EHS
VDD
VSS
STB
DPn
MO
CS
LS
RI
CI
LI
R
Schmitt trigger input for ring frequency discrimination. Disabled during off-hook.
L
Input for sensing the line current
L
Input used for power extraction and line current sensing
R
Input for ac-separated receive signal
S
Input for side tone cancellation network
C
N-channel open drain output to control the external high power shunt transistor for synthesising ac- and
dc- impedance, modulation of line voltage and shorting the line during make periods of pulse dialling
C
Input pin for the capacitor to program a complex impedance
D
Open drain output pulls low during break periods of pulse dialling and flash
E
Schmitt Trigger Input to detect an electronic off-hook.
M
Schmitt Trigger Input to detect a manual off-hook.
D
-4/-6dBm
-6/-8dBm
-8/-10dBm
L
45mA-75mA
20mA-50mA
None
Ring
PDM output of the ring melody generator.
V
Positive Power Supply
V
Negative Power Supply
ine Current
ine
ine
ide
lectronic
oltage
oltage
ing
eceive
urrent
omplex
ial
TMF
anual
P
M
I
L
T
F
nput
ulse Output
L
one
oss
requency
elody
H
S
D
S
evel
I
I
nput
hunt Control Output
ook
mpedance Input
ource
rain
H
C
B
ook
ompensation Select Pin
S
alance Input
S
O
S
D
ense Input
election
utput
witch
S
D
S
rain
ource
witch
iscrimination
—> DLS open
—> DLS-r1
—> DLS-r2
—> LLC open
—> LLC-r3
—> LLC-r4
Function
austriamicrosystems
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