Other Parts Discussed in Thread: TAS2557, TAS2563, TAS2562
I have some question of Boost Mode on Rom Mode2.
In the datesheet, boost mode is automatically enabled by the TAS2557 internal algorithm.
184.108.40.206 Boost Mode
The TAS2557 internal processing algorithm automatically enables the boost when needed. A look-ahead
algorithm monitors the battery voltage and the digital audio stream. When the speaker output approaches the
battery voltage the boost is enabled in-time to supply the required speaker output voltage. When the boost is no
longer required it is disabled and bypassed to maximize efficiency. The boost can be configured in one of two
modes. The first is low in-rush (Class-G) supporting only boost on-off and has the lowest in-rush current. The
second is high-efficiency (Class-H) where the boost voltage level is adjusted to a value just above what is
needed. This mode is more efficient but has a higher in-rush current to quickly transition the levels. This can be
configured using Table 8.
1. How can we check whether boost mode is enabled or not?
2. Is boost mode automatically enabled on Rom Mode1 and Rom Mode2?
3. Is there a way to check boost mode enable by the register?
4. Is there a way to control boost mode enable by the register?