Except Shutdown Mode, TAS5827 has other 4 states for different power dissipation which are listed in the Electrical Characteristics Table.
- Deep Sleep Mode. Register DEVICE_CTRL2 Register (Offset = 3h)
[Reset = 10h] -D[1:0]=00, Device stays in Deep Sleep Mode. In
this mode, I2 C block keeps working.
This mode can be used to extend the battery
lifetime in some portable speaker application
cases, once the host processor stops playing audio
for a long time, TAS5827
can be set to Deep Sleep Mode to minimize power
dissipation until the host processor starts
playing audio again. The device returns to Play
Mode by setting Register DEVICE_CTRL2 Register (Offset = 3h)
[Reset = 10h] -D[1:0] to 11. Compared with Shutdown Mode
(Pull PDN Low), enter or exit
Deep Sleep Mode, DSP keeps active.
- Sleep Mode. Register DEVICE_CTRL2 Register (Offset = 3h)
[Reset = 10h] -D[1:0]=01, Device stays in Sleep Mode. In this
mode, I2 C block, Digital core, DSP
Memory, and 5 V Analog LDO keep working. Compared
with Shutdown Mode (Pull PDN
Low), enter or exit Sleep Mode, DSP keeps
active.
- Output Hiz Mode. Register DEVICE_CTRL2 Register (Offset = 3h)
[Reset = 10h] -D[1:0]=10, Device stays in Hiz Mode. In this
mode, Only the output driver is set to be Hiz
state, all other blocks work normally.
- Play Mode. Register DEVICE_CTRL2 Register (Offset = 3h)
[Reset = 10h] -D[1:0]=11, Device stays in Play Mode.