AS2525B austriamicrosystems, AS2525B Datasheet - Page 7

• Manufacturer Part Number: AS2525B
• Description: IC, SINGLE CHIP HANDS FREE PHONE, TQFP44
• Manufacturer: austriamicrosystems

Specifications of AS2525B

• Audio Control Type: Volume
• Output Power: 500mW
• Control Interface: Serial
• Control / Process Application: Volume Control For Earpiece & Loudspeaker
• Supply Voltage Range: 3V To 5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Datasheet AS2525
The above parameters are programmable using a password
(0123) through external EEPROM. All procedures must be
terminated by pressing the [PG] key. Software for factory
settings is available on request.
The programming of timings is done by using a HEX data
code as follows:
Figure 2: Keys for HEX-code entry
Revision 2.1
A
E
Flash 1 During LD
Flash 2 During LD
Extended LCD Symbols
Tx Soft Clip, Handsfree
Rx Soft Clip, Handsfree
Voice Switching, Speed
Handset/Headset Volume
LCD Test
Temporary MF by * with
tone
Key Lock Function
Pin Select “DM/HM”
Ringer Off Function
Key Test
Volume Control on
Handset
C1
1
2
3
(M5)
(M1)
Parameter
B
F
(M6)
C2
4
5
6
(M2)
C
7
8
9
C3
(M3)
D
Symbol
DM/HM
C4
0
(M4)
[#] + [ ] +
[#] + [#] +
[9] + [1] +
[9] + [2] +
[9] + [3] +
[9] + [4] +
[9] + [5] +
[9] + [6]
[9] + [7] +
[9] + [8] +
[9] + [9] +
[9] + [0] +
[9] + [ ] +
[9] + [#] +
[PG] + [0] + (Password) +
Procedure:
R1
R2
R3
Table 4: Timing selection by HEX code
Post-flash pause
Inter-digit pause
Inter-tone pause
Pre-digit pause
Tone duration
[1] = on
[0] = off
[0] = off
[1] = on
[1] = on
[1] = x 2
[1] = reset by
on/off-hook
Turns on all segments, pressing any further key turns
on all digits “1” and all symbols off.
[0] = off
[1] =
available
[1] = MF/LD
[1] =
available
Any key pressure turns the LED on
[1] = enabled
Parameter
Pause 1
Pause 2
Flash 1
Flash 2
Default
Data = 4096 - (f
(T = Time; f
OSC
[0] = off
[1] = on
[1] = on
[0] = off
[0] = off
[0]=x1 (slow); [2]=x4; [3]=x8 (fast)
[0] = setting is maintained
[1] = on
[0] = not available
[0] = Handset/Headset
[0] = not available
[0] = disabled
= 3.58 MHz)
OSC
Default
840 ms
101 ms
285 ms
82 ms
82 ms
33 ms
1 sec
3 sec
274
/ (512 * 12) * T
HEX
FED
FD0
FD0
FC4
F5A
DB9
92C
E17
F60
Options
1111 0001 0111
1111 1101 0000
1111 1101 0000
1111 1100 0100
1111 0101 1010
1101 1011 1001
1001 0010 1100
1111 1110 1101
1111 0110 0000
Binary Data
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