AS2534 AMSCO [austriamicrosystems AG], AS2534 Datasheet
AS2534
Available stocks
Related parts for AS2534
AS2534 Summary of contents
Page 1
... A RAM is on chip for a 31 digit last number redial and memories (not AS2534) each containing digits/ data. The sliding cursor procedure makes the LNR function easy to use under various PABX systems. Also centrex keys (not AS2535) are provided ...
Page 2
Data Sheet Pin Description Pin # Symbol Function 23 M1 Microphone Inputs 24 M2 Differential inputs for the microphone (electret Receive Output This is the output for driving a dynamic earpiece with an impedance of 140 to 300 ...
Page 3
... P/M P/M yes yes yes yes yes yes yes yes yes no yes yes 600 ms 600 ms 3 and V can be used to set the DTMF GND SS AS2534E AS2535 yes no yes yes yes yes yes no MT P/M yes no yes yes yes no yes yes ...
Page 4
... Figure 2a (AS2533/ – – Figure 2b (AS2534) 4 AS2533... July 1998 ...
Page 5
Data Sheet Keyboard Connections Continued ...
Page 6
... The + key increases the gain by 8 steps and the – key decreases the gain by 5 steps (total range 13.5 dB). On AS2533/5 the volume is reset to default by next off-hook and on AS2534/6 the volume setting will remain at last setting. A POR will always reset the volume to default. ...
Page 7
... The keys M1 the key (AS2533/6 only) is used for abbreviated MR dialling. Memory arrangement AS2533/6 AS2534 AS2535 Storable numbers Direct memory keys Indirect memories In the on chip RAM, numbers can be stored. Each number can contain digits (including pauses). During programming multiple pauses can be inserted by ...
Page 8
... RAM. Repetition rate means that a sequence of 6 frequencies is repeated times within 1 second. The sequence of the frequencies is controlled by the sequence register as follows: Sequence The AS2534E is fixed to default settings and can not be -4.0 dBm programmed to other settings. -5.2 dBm -6.4 dBm Pacifier Tone -7 ...
Page 9
Data Sheet Typical Characteristics of Line Loss Compensation Fig. 4 (dB) Tx Gain 35 34 LLC = 800 600 LINE -10 dBm Fig. 5 (dB) ...
Page 10
Z BAL ( LINE STB RI 300 SYN (970 ) LLC & VOLUME COMFORT – 26dB + Z LINE DTMF Z 30 REF + – 12dB + PRIVACY ...
Page 11
Data Sheet Typical Application Complex Impedance (270 + 750 // 150 nF) Figure 9 Only the components necessary for presenting the complete functions of the AS253X are included. The external components might change to comply with various national PTT regulations ...
Page 12
Data Sheet Operating Procedures Procedure Principles The procedures for utilizing the features of the AS253x are optimized out of consideration for the human factor in order to: - meet the user´s expectations - be easy to learn and relearn - ...
Page 13
... Data Sheet Programming Tone Ringer (not AS2534E) MR Storing Numbers Digit Repetition Rate 1 1 time (slow time (slow time (slow times 5 4 times 6 4 times (default times (fast times (fast times (fast) 0 None *) When digit 0 (tone ringer off) has been programmed, the device will automatically return to the previous setting (different from 0) by next off-hook ...
Page 14
Data Sheet Temporary MF When MODE pin = row 5, pressing the * key also transmits the tone by MF select. The T/P key (not AS2535) can be used alternatively to the * key. FIFO Pressing any other key does ...
Page 15
... Data Sheet Storing Numbers (not AS2534) # Programming Tone Ringer Melodies Entries (0- LNR, R1, R2, R3) will be written directly into the selected memory location Rev. 7 Key entries different to the procedure will be ignored. P/M Exit programme mode from each state with on-hook or with the P/M key. ...
Page 16
Data Sheet Automatic Dialling Rev M1- Postdialled digits are not stored but buffered in FIFO 16 AS2533...6 LNR July 1998 ...
Page 17
Data Sheet Timing Diagrammes LD Dialling MUTE MASK HS/DPN t IDP t PDP LD Dialling With Access Pause MUTE MASK HS/DPN t IDP t PDP MF Dialling MUTE MASK HS/DPN TONE t TD Continues.... Rev ...
Page 18
Data Sheet Flash MUTE MASK HS/DPN Repeat Dialling (not AS2535) RP key MUTE DIALLING HS/DPN Power Down Rev PFP Number engaged connection AS2533... New t ...
Page 19
Data Sheet Electrical Characteristics Absolute Maximum Ratings Positive Supply Voltage .................................................................................................................. -0.3V Input Current ............................................................................................................................................... Input Voltage (LS) ......................................................................................................................... -0.3V Input Voltage (LI, CS) ...................................................................................................................... -0.3V Input Voltage (STB, RI) ......................................................................................................... -2V Input Voltage (MO) ...................................................................................................................... -0.3V Digital Input Voltage ...
Page 20
Data Sheet AC Characteristics ( mA 800 Hz unless otherwise specified) LINE Symbol Parameter T x Transmit A Gain, Transmit TX A Variation with Frequency TX/F THD Distortion V Soft Clip Level AGC A Soft Clip ...
Page 21
Data Sheet AC Characteristics (cont´d) (I Symbol Parameter Keyboard t Key Debounce Time D HS/DPN Input t Low to High Debounce HS-L t High to Low Debounce HS Frequency deviation V MF Tone Level (Low ...
Page 22
... PS or LNR key. Rev. 7 Conditions Min R1 key 100 R2 key 270 R3 key (AS2533/4B/5/6) 600 R3 key (AS2534E only) 312 Note 8 2.0 Initial Programme Mode Only P/M mode, key entry Key entry Valid key entry, prog. Terminate with P/M key ...
Page 23
Data Sheet Test Circuit AS253x Rev. 7 MULTI-STANDARD SINGLE CHIP TELEPHONE Figure 10 23 AS2533...6 July 1998 ...
Page 24
Data Sheet Characteristic Curves (Typical) Fig. 11 Receive Soft Clipping and Distortion 1,2 soft clipping (Vp) VRO 1,0 Line Current 0,8 Frequency: 800 Hz Tamb Typically 0,6 0,4 0,2 0,0 0,00 0,25 0,50 0,75 1,00 1,25 ...
Page 25
... AS2533 P 28 pin DIP 4 direct/10 indirect AS2534B T 28 pin SOIC none AS2534B P 28 pin DIP none AS2534E P 28 pin DIP none AS2534E T 28 pin SOIC none AS2535 T 28 pin SOIC 12 direct AS2535 P 28 pin DIP 12 direct AS2536 T 28 pin SOIC ...