AS2525B austriamicrosystems, AS2525B Datasheet - Page 5

• 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
Key Definitions and Procedures
Table 1: Key definitions
Table 2: Digits
Revision 2.1
Digit Key
[M1] - [M8]
[0] - [9],
[#], [ ]
[R/P]
[MR]
[PG]
[MT]
[SH]
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[ ]
[#]
[V+]
Key
[FL]
[V-]
[ ]
941 + 1336 Hz
697 + 1209 Hz
697 + 1336 Hz
697 + 1477 Hz
770 + 1209 Hz
770 + 1336 Hz
770 + 1477 Hz
852 + 1209 Hz
852 + 1336 Hz
852 + 1477 Hz
941 + 1209 Hz
941 + 1477 Hz
Off-hook
LD mode
Speech mode
Program mode
Speech mode
Mute state
Program mode
Program state
Speech mode
Speech mode
(f
DTMF Mode
LOW
Condition
+ f
HIGH
)
Temporary MF select
Pulse Mode
Digits
Temporary MF select
Enter program state
Exit program state
Enter mute state
Exit mute state
Enter blank
Redial/Pause
Pause
Flash function
Volume control
Volume control
Memory redial key
Memory dial
Second function (shift)
10 pulses
2 pulses
3 pulses
4 pulses
5 pulses
6 pulses
7 pulses
8 pulses
9 pulses
1 pulse
-
Function
To enter PIN protected programming
Select pause duration
Programming Mode
Select flash duration
Select dialing mode
Function depending on mode
Providing mixed mode dialing (default LD selected)
To enter the program state
To terminate/exit program state
To enter mute state
To terminate/exit mute state
To enter blank digit during programming
Allows re-signaling of the last dialed number and
insertion of pauses
Each key pressure inserts a pause
Invokes a timed loop break
To increase the receive gain
To increase or decrease the receive gain
To access memory by key codes
Access keys to memories 1 to 8 and 9 to 16
To access second function of keys
Key lock toggle
Ringer volume
Ringer melody
([PG] + Digit)
LCD contrast
Ringer on/off
Remark
Memory Location
([MR] + Digit)
Memory 17
Memory 18
Memory 19
Memory 20
Memory 21
Memory 22
Memory 23
Memory 24
Memory 25
Memory 26
-
-
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