AS2534BT Austriamicrosystems, AS2534BT Datasheet - Page 22

• Manufacturer Part Number: AS2534BT
• Description: AS Series 3.8 to 5V Multi-Standard CMOS Telephone IC for Basic Telephone SOIC-28
• Manufacturer: Austriamicrosystems

Data Sheet
Note 1: The values are valid during automatic dialling and are minimum values during manual dialling, i.e. the tones will
Note 2: The rise time is the time from 10% of final value till the tone amplitude has reached 90 % of its final value.
Note 3: Relative to high group.
Note 4: The FCI circuit is reset by POR and HS/DPN pulled high (off-hook). After a reset the FCI circuit is in a standby state. A
Note 5: This does not include the frequency deviation of the ceramic resonator.
Note 6: During temporary MF mode.
Note 7: An invalid key entry in programme mode will invoke a tone sequence with 4 tone bursts of 40 ms and pauses between
Note 8: Pauses inserted within the first 5 entries of a digit string will be automatically terminated after 2 seconds. Pauses
Symbol
t
t
t
t
V
t
F1
F2
F3
t
t
f
f
f
V
t
t
t
t
t
V
Rev. 7
FD
PFP
AP
RP
MD
DT
TO
MIN
MAX
PT
RTD-E
RTD-A
RTD-R
LED-ON
LED-OFF
MO
RT
CT
continue as long as the key is depressed.
positive edge on FCI will start a 73 ms timer and the frequency discrimination is initiated. Whenever a period of the ring
signal is missing, the timer is reset. When a valid ring signal is present for 73 ms, the melody generator is started and is
directly controlled by the ring signal. This condition will remain until a new reset.
bursts of 28 ms and abort the programme mode.
inserted after location 5 can only be terminated manually by pressing the PS or LNR key.
Parameter
Flash Duration 1
Flash Duration 2
Flash Duration 3
Post Flash Pause
Access Pause
Repeat Break Time
Tone Ringer
Melody Output
Melody Delay
Frequency 1
Frequency 2
Frequency 3
Detection Time
Detection Time-out
Min. Detection Frequency
Max. Detection Frequency
Pacifier Tone
Frequency
Level (RO)
Duration, Key Entry
Duration, Acknowledge
Duration, Reject
LED Output
"on-time"
Interval
Comfort Tone (DTMF)
Level (RO)
Conditions
R1 key
R2 key
R3 key (AS2533/4B/5/6)
R3 key (AS2534E only)
Note 8
Initial
Programme Mode Only
P/M mode, key entry
Key entry
Valid key entry, prog.
Terminate with P/M key
Invalid key entry, note 7
P/M state
P/M state
Relative to LS
22
Min
100
270
600
312
2.0
1/f + 73ms
note 4
PDM
1067
1333
1477
4x40
2.05
Typ
375
274
800
140
1.6
-30
13
70
60
40
80
1
Max
2.12
102
300
650
450
10
AS2533...6
July 1998
Units
sec
sec
sec
dBr
mV
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
Hz
Hz
Hz
Hz
Hz
Hz
s