PDF for T8301
T8301 is AGERE [Agere Systems] company product |
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 T8301 PDF Download |
File Size : | 1535.96 KB |
| Manufacturer: | AGERE [Agere Systems] | |
| Description: |
...The T8301 integrated circuit contains two audio analog inputs. There is a single-ended input (AINAN) to be con-nected to a standard business telephone handset receiver. There is a differential input (AINCP, AINCN) to be con-nected to a microphone. This provides the T8301 with the input circuitry to implement a speakerphone. The differential input is directly connected to a 30 dB amplifier. The input select multiplexer routes AINAN or the output ... ...5.4 Tone RingerThe T8301 analog circuitry contains a tone ringer generator. When this circuit is powered up and enabled, the ring-ing tone output is added to the current analog speaker signal and output through the differential speaker driver. Custom tones may be generated by modifying the T8301 firmware.... ...A block diagram of the T8301 can be found in Figure 3 on page 8.Since the DSP1627 is an integral part of the T8301, we will refer to the DSP1627 Digital Signal Processor ... |
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