Other Parts Discussed in Thread: TAS5825M
Tool/software:
I would like to create an app that allows users to set region and time constant in the DRC settings screens in the PurePath console.
Therefore, we check the I2C communication data when setting up from the PurePath Console.
The environment is as follows:
- device : TAS5828M
- speaker configuration : Stereo2.0
- Audio Mode : BasePro(2.0 4k)
Below is the I2C communication data when set up in the attached screen state.
w c0 00 00
w c0 7f 8c
w c0 00 08
w c0 68 00 1b 4b 98 00 1b 4b 98 00 0d a6 86 00 00 00 00 00 00 00 00 ff 81 47 ae
w c0 00 00
w c0 7f 8c
w c0 00 09
w c0 08 f9 06 21 a9 fe 01 c0 79 00 00 00 00 00 00 00 00
I think this region and time constant setting corresponds to K0_1 to off2_1 in the DRC of the DSP memory map in the application report [slaa786a.pdf]. Is this correct?
In this case, the DSP memory address is different, but which one is correct?
For DSP memory map:
- BOOK : 0x8C
- PAGE : 0x06
- SUB ADDRESS : 0x64 - 0x7C
And
- BOOK : 0x8C
- PAGE : 0x07
- SUB ADDRESS : 0x08 - 0x10
For I2C communication dat
- BOOK : 0x8C
- PAGE : 0x08
- SUB ADDRESS : 0x68 - 0x7C
And
- BOOK : 0x8C
- PAGE : 0x09
- SUB ADDRESS : 0x09 - 0x14
In addition, if you extract the settings for the DSP memory from the above I2C communication data, they become the following values.
DRC1 Energy : 0.000832986, Attack(ms) : 25
DRC1 Attack : 0.000832986, Energy(ms) : 25
DRC1 Decay : 0.00041658, Release(ms) : 50
K0_1 : 0, Ratio : 1
K1_1 : 0, Ratio : 1
K2_1 : -0.99000001, Ratio : 100
T1_1 : -13.95209777, Threshold(dB) : -60
T2_1 : -3.986313701, Threshold(dB) : 0
off1_1 : 0, Offset(dB) : 0
off2_1 : 0.166096449, Offset(dB) : 1
How are these values calculated from the values set in the PurePath Console?
Also, changing either the offset or the ratio will change the other. What is the rule for this change?
