AS2522BF austriamicrosystems AG, AS2522BF Datasheet - Page 10

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

Data Sheet AS2522B
Revision 3.4
A A A A D D D D
3 2 1 0 3 2 1 0
1
1
1
1
1
1
1
1
Address
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
0 16 gains
1
0 16 gains
1 16 gains
0
1
0
1 x
x
x
x
x
Data
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Control registers AS2522A, AS2522B
Handsfree receive endgain
Data
0x0
0xF
Handsfree switching characteristic
off1 off0: BGN-offset
Hfs1 HFs0: Speed of voice switching
Transmit gain [16], 16 steps, 1dB stepsize
Data
0x0
0xF
Receive gain [16], 16 steps, 1dB stepsize
Data
0x0
0xF
FSK-mode, LLC[2], LI-Voltage
AS2522B:
FSK: Frequency select in single tone mode AS2522B ONLY
FSK:
AS2522A
FSK: For factory test only !
LIV: Voltage at pin LI
LLC1 LLC0: Line loss compensation setting
Mute, Lh, Hf, Hook Switch
Mute: Mute transmit
His Hf Lh
Krat5,Test3,Test2,Test1: For factory test only !
Reset to defaults
:
:
:
0
1
1
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
Single Tone frequencies are read from Addr. 4:
Single Tone frequencies are read from Addr. 1:
x
0
1
1
RXgain
-20dB
HS-mode
HS-mode
0dB
0
1
0
1
0
1
0
1
0
1
0
1
30dB
45dB
-6dB
+9dB
x
0
0
1
:
:
:
max speed
min speed
20mA-50mA
NO Line loss compensation
45-75mA
NO Line loss compensation
TXgain
-30dB
-50dB
120mV
180mV
240mV
300mV
On Hook
Off Hook, Handset mode
Off Hook, Handfree mode
Off Hook, Loudhearing mode
HF-mode
HF-mode
39dB
54dB
22dB
37dB
:
:
Min. receive volume
Max. receive volume
0...3.5V, 1...4.5V
0...OFF,
1...ON
frequ1, frequ0
f4,f3,f2,f1
Default value
after reset
0111
1000
0111
0111
0111
0000
0000
na
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