JAJSMF1G April 2006 – July 2021 TLV320AIC3106
PRODUCTION DATA
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The decay time determines how quickly the PGA gain is increased when the input signal is too low. It can be varied in the range from 0.05 s to 22.4 s. The extended Right Channel Decay time can be programmed by writing to Page 0, Registers 104, and Left Channel is programmed by writing to Page 0, Register 106.
The actual AGC decay time maximum is based on a counter length, so the maximum decay time will scale with the clock set up that is used. Table 10-2 shows the relationship of the NADC ratio to the maximum time available for the AGC decay. In practice, these maximum times are extremely long for audio applications and should not limit any practical AGC decay time that is needed by the system.
NADC RATIO | MAXIMUM DECAY TIME (seconds) |
---|---|
1.0 | 4.0 |
1.5 | 5.6 |
2.0 | 8.0 |
2.5 | 9.6 |
3.0 | 11.2 |
3.5 | 11.2 |
4.0 | 16.0 |
4.5 | 16.0 |
5.0 | 19.2 |
5.5 | 22.4 |
6.0 | 22.4 |