PSB21382 INFINEON [Infineon Technologies AG], PSB21382 Datasheet - Page 138
PSB21382
Manufacturer Part Number
PSB21382
Description
Siemens Codec with S/T Transceiver
Manufacturer
INFINEON [Infineon Technologies AG]
Datasheet
1.PSB21382.pdf
(270 pages)
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Data Sheet
4.3.3
Controlling of the generated tone follows the setting of the control bits ET (Enable Tone)
and PT (Pulsed Tone) and the CRAM parameters TON and TOFF corresponding table
17 and table 18.
Table 17 Control Generator
Table 18 CRAM Parameters of the Control Generator
Parameter
TON
TOFF
Four typical examples for the control generator programming are shown in Figure 76.
In the automatic stop mode (TGCR.SM = ’1’) the selected tone sequence is only stopped
after a sequence is completed. This avoids unpleasant sounds when stopping the tone
generator.
The tone signal can be fed directly to the input of the loudspeaker amplifier by setting the
TGSR.TRL bit to ’1’. In this mode only a square wave (fixed amplitude of VDD) is
available from the signal generators (F1, F2, F3)and the TGCR.SQTR bit has no effect.
ET
0
0
1
1
Control Generator
PT
0
1
0
1
# of CRAM
Bytes
2
2
Generator Output
No tone
the tone is pulsed with the programmable parameters TON,
TOFF
continuous tone generation without breaks
the tone is pulsed with the programmable parameters TON,
TOFF
Range
20 ms to 16 min
20 ms to 16 min
128
Comment
Period while the tone generator
is turned on
Period while the tone generator
is turned off
PSB 21381/2
PSB 21383/4
2001-03-12
Codec
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