Data Sheet AS2523, AS2524, AS2524B

Revision 1.12, Preliminary

Page 9 of 19

Serial interface Registers

The following table shows the content of the 16 control registers.

For a detailed description of the commands see Application note AN523/24.

Control registers AS2523

AA AA

DD DD

32 10

32 10

000

0

Nop

na

na

000

1

na

na

001

0

na

na

001

1

na

na

010

0

x

x

x

x

Conf-Tone:

0... No Conf Tone 1... Conf Tone

0111

0111

LIV: Voltage at pin LI

0...3.5V, 1...4.5V

LLC1 LLC0: Line loss compensation setting

0

0

20mA-50mA

0

1

NO Line loss compensation

1

0

45-75mA

1

1

NO Line loss compensation

010

1

BURS: Analog tone at RO

0...OFF,

1...ON

BURL: Analog tone at LS

0...OFF,

1...ON

CT1 CT0: @RO

@LS

0

0

-36dB

-15dB

TONE-confidence level

0

1

-30dB

-9dB

rel. to pin LS

1

0

-24dB

-3dB

1

1

-18dB

+3dB

0001

0001

0

1

1

0

x

x

x

x

Softclip-settings, Tx_comp_gain settings

1000

1000

Bit1 Bit0 :Tx_comp_gain

0

0

+8dB

0

1

+11dB

1

0

+14dB

1

1

+17dB

SOFTRX: Softclip RX

0...OFF,

1...ON

SOFTTX: Softclip TX

0...OFF,

1...ON

01

11

Bit1 Bit0: Rx-offset setting

0

0

0mV

0

1

12mV

1

0

40mV

1

1

100mV

Delay_10ms

0... no delay

1... 10ms delay

Bnon

0... BGN off

1... BGN on

0101

1100

1

0

0

0

16 gains

Handsfree receive endgain

1111

1011

Data

RXgain

TXgain

0x0

-20dB

-30dB

Min. receive volume

:

:

0xF

+0dB

-50dB

Max. receive volume

100

1

x

x

x

x

0000

1100

off1 off0: BGN-offset

0

0

120mV

0

1

180mV

1

0

240mV

1

1

300mV

Hfs1 HFs0: Speed of voice switching

0

0

max speed

0

1

1

0

1

1

min speed

1

0

1

0

16 gains

Transmit gain [16], 16 steps, 1dB stepsize

0111

0111

Data

HS-mode

HF-mode

0x0

30dB

39dB

:

:

:

0xF

45dB

54dB

1

0

1

1

16 gains

Receive gain [16], 16 steps, 1dB stepsize

1111

1111

Data

HS-mode

HF-mode

0x0

-6dB

19dB

:

:

:

0xF

+9dB

34dB

Address

Data

for AS2523,

AS2524HF

for AS2524 LH bond

option

Default value

after reset

11

00

HP_on

:

0... fg=200Hz

1... fg=2000Hz

rec_on :

0... Rxcomp=AGND

1... Rxcomp=RECV

Mute

:

0... No mute

1... Tx-path muted

Tone

:

0... Tx-signal path 1... Ton in signal path

0100

1000

1

1

0

1

x

x

x

x

Mask, Lh, Hf, Hook Switch

0100

0101

Mask:

0... No mask

1... Mask acitivated

His

HF

LH: Hook functions

0

x

x

Power down

1

0

0

Handset

1

0

1

not allowed

1

1

0

Handsfree

1

1

1

Loudhearing

111

0

x

x

x

x

0000

0001

slow_rec: fast change to TX, slow change to RX, no IDLE

Krat5,Test3,Test2: For factory test only !

1

1

1

1

x

x

x

x

Reset to defaults

na

na