AS2522BF austriamicrosystems AG, AS2522BF Datasheet - Page 3

• Manufacturer Part Number: AS2522BF
• Description: Telephone Line Interface and Speakerphone Circuit
• Manufacturer: austriamicrosystems AG

Data Sheet AS2522B
Revision 3.4
Pin #
23
22
21
27
29
30
28
24
20
15
16
25
32
26
1
2
Symbol
RECV
VDDD
VSSA
VSSD
RECI
CBN
VPP
CLK
xCS
LO1
LO2
FT1
FT2
CM
DO
DI
Loudspeaker Power Supply
High power supply for the output driver stage
C
This is an output for controlling the external switching converter. During ringing it converts the
ring signal into a 4V supply voltage
C
Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm )
D
Data input of the serial interface. Internal pull-up resistor ( 100kOhm )
Cl
Clock input of the serial interface. Internal pull-up resistor ( 100kOhm )
D
Data output of the serial interface. If xCS=1 DO is in HI-Z state
L
Output pins for a 50
Analog input pin for connecting a capacitor for offset cancellation.
Analog input pin for connecting a capacitor for offset cancellation.
Analog input pin for connecting a capacitor for background noise monitoring.
Analog input for the handsfree receive path. Should be connected to RO via coupling
capacitor.
Analog input for receive voice switching path.
Power supply pin for LS1-LS2 output amplifier.
V
Negative Digital Power Supply
V
Positive Digital Power Supply
oudspeaker
onverter
hip
ata
ata
oltage
oltage
oc
k
S
I
O
nput
elect
utput
S
D
ource
rain
M
ake Output
O
D
utput
S
rain
ource
1 and 2
D
loudspeaker
igital
D
igital
Function
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