DRV2510-Q1: IC simulate with OrCAD

Hi Susan,

I looked at the model and seems the model is simplifying the readings in register 0x03 and mapping them to a dedicated pin

Basically when you write a command via I2C, the register values that control some functions such as gain or threshold levels are set to either 1 and 0.

In this model , each bit is written via a dedicated pin. So you can write 0 ( ground the pin) or 1 ( Connect to supply voltage) for each bit through these pins. 

For example setting  D0 to 0 or 1 selects one of the 2 internal clk generators with f=400kHz or 500KHz . Probably 2 clk generators are Muxed and D0 controls which one is selected and used.  So it sets the Oscillator frequency.

With same token, D3D4D5  can provide 8 options and depending on the 0 or 1 you  apply it will connect one of the 8 choices ( some defined reference voltages) to a specific node. So  if you apply 000 to these pins , it will select a 5V refence voltage and if you apply 111 ( all Hi)  to these pins, then a very large voltage source  is going to be used so you never hit the limit and thus seems protection is disabled.  So D3-D5 sets Speaker Guard clipping level

Gain is set using D6D7 which gives you 4 options . for example, If you connect GND and VDD to them respectively,  you are writing 01 to the registers and internally it will select the FB network such that results in gain of 26dB. This usually is done by an array of FB resistors and parallel switches along with one fix resistor to change the ratio and thus gain.

Since the model is encrypted i can not see the actual implementation but I am sure it is implemented similar to what I described above.

Let me know if you have any questions.

Kind Regards,

Arash