as2522bq austriamicrosystems, as2522bq Datasheet - Page 9

• Manufacturer Part Number: as2522bq
• Description: Telephone Line Interface And Speakerphone Circuit
• Manufacturer: austriamicrosystems

Data Sheet AS2522B
Serial interface Registers
The following table shows the content of the 16 control registers.
For a detailed description of the commands see Application note AN522.
Revision 3.4
A A A A D D D D
3 2 1 0 3 2 1 0
0
0
0
0
0
0
0
0
Address
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0 Nop
1 DTMFpair
0 DTMFLevel
1
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
No operation. W rite to this location to get AS2522-Satus
inform ation without altering any other setting.
Frequency select depending on Tone Generator mode
DTMF-Generator mode:
HIGH Group
c1 c0
DTMF-Level 13 steps, 1dB stepsize
Data
0x0
0xC
DTMF-settings
Tone:
preemph: DTMF-preempahsis
CT1 CT0: @RO
frequ1 frequ0
Tone Generator m ode, single tone path
BURS: Analog tone at RO
BURL: Analog tone at LO1/LO2
M1 M0: Tone generator mode select
0
0
1
1
Softclip-settings, Noise m onitoring
RING:
BNON:
SOFTRX: Softclip RX
SOFTTX: Softclip TX
DC/DC-Converter ON/OFF,Mask
ldbr: Digital tone at RO
ldbl: Digital tone at LO1/LO2 0...OFF,
MASK: Mask function
DC/DC: DC/DC-converter
Single Tone frequencies if FSK=0 (Addr. 12) and RING/Beep Volum e [4]
0
0
1
1
:
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
DTMF-level LOW GROUP at pin LS
-16dBm
fHigh
1209Hz
1336Hz
1477Hz
1633Hz
-4dBm
Tone generator OFF
DTMF generator mode
Single tone Analog mode
Single tone Digital mode ( RING )
0
1
0
1
RING-path
Noise monitor
:
DTMF-signal path
-36dB
-30dB
-24dB
-18dB
1067Hz
1333Hz
1333Hz
800Hz
LOW-Group
r1 r0
@LO1/LO2
-15dB
0
0
1
1
-9dB
-3dB
+3dB
0
1
0
1
fLow
697Hz
770Hz
852Hz
941Hz
DTMF-confidence level
rel. to pin LS
0...OFF,
0...OFF,
0...OFF,
0...OFF,
0...OFF,
0...2.2dB, 1…3.2dB
V1 V0:
0
0
1
1
0...OFF,
0...OFF,
0...OFF,
0...OFF,
0...OFF,
Single tone mode AS2522B ONLY
AND FSK=1 (Addr 12):
Data
f[3:0] Frequency
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
1
0
1
1...ON
1...ON
1...ON
1...ON
RING volume
-17.5dB
-11.5dB
1067Hz
1333Hz
1300Hz
2100Hz
1200Hz
2200Hz
1180Hz
1070Hz
1270Hz
1650Hz
1850Hz
2025Hz
2225Hz
1...ON
-5.5dB
800Hz
980Hz
0Hz
0dB
1...ON
1...ON
1...ON
1...ON
1...ON
1...ON
(ring)
(ring)
(ring)
(V.23)
(V.23)
(Bell 202)
(Bell 202)
(V.21)
(V.21)
(Bell 103)
(Bell 103)
(V.21)
(V.21)
(Bell 103)
(Bell 103)
Default value
after reset
0000
1100
0101
0000
0000
0000
0000
na
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