AS2524B austriamicrosystems AG, AS2524B Datasheet - Page 3

• Manufacturer Part Number: AS2524B
• Description: Telephone Line Interface and Speakerphone Circuit
• Manufacturer: austriamicrosystems AG

Data Sheet AS2523, AS2524, AS2524B
Revision 1.12, Preliminary
Pin #
25
26
27
23
20
21
24
22
28
2
3
4
1
/xMUTE
TONEIN Analog input for DTMF-signals.
Symbol
RECV
VSSA
RECI
/xPD
/HFE
TXO
CBN
VPP
xCS
CLK
TXV
FT1
LO
DI
C
Chip select input of the serial interface. Internal pull-up resistor ( 100kOhm )
Mute transmit-, receive- path and activate tone path on AS2524 and AS2524B
D
Data input of the serial interface. Internal pull-up resistor ( 100kOhm )
Power down mode for AS2524 and AS2524B (On-hook)
Cl
Clock input of the serial interface. Internal pull-up resistor ( 100kOhm )
Handsfree mode operation on AS2524 and AS2524B
L
Analog input pin for connecting a capacitor for offset cancellation.
Analog output of the transmit signal
Analog input for the transmit signal in the voice switching path
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 LO output amplifier.
Power supply pin for LO output amplifier.
oudspeaker
hip
ata
oc
k
S
I
nput on AS2523
on AS2523
elect on AS2523
O
utput. Output pin is for a 25
Function
loudspeaker
austriamicrosystems
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