TDA4VM: Understanding of gpio in tda4vm TRM and sysconfig tools

Hi,

Can any Ti experts give some answers to the above questions?

Best Regards
Eason

Hi Eason,

eason zhou said:

But GPIO0_[0-35] included in GPIO 0[0-127], and why have independent GPIO0_[0-35]? Because both are the same.（as same as GPIO1_[0-35] and GPIO1_[0-127]）

This is just the way Sysconfig is set up as each GPIO instance is not allowed to have a different number of GPIO pins.

Let me get back to you about Q2.

eason zhou said:

In Main domin gpio： I use PRG1_PRU0_GPO11/AF24 as GPIO0_12, So should I use GPIO0_12 in GPIO0_[0-127] or GPIO0_12 in GPIO0_[0-35]?

At the top, you will want to use the dropdown to select GPIO0. Once you enable signal 12, you can also check the drop down to ensure you see PRG1_PRU0_GPO11/AF24.

eason zhou said:

In Main domin gpio： I use SPI0_CS1/Y4 as GPIO0_112, So how should I know which one of the 10 instances it belongs to?

All the instances are abstracted into GPIO0 and GPIO1. Based on GPIO0_112, you know it will be part of GPIO0.

Thanks,

Neehar

Hi, Neehar,

Thank you for your reply.
But I still don't understand a little bit.

You can see, There are ten instance of gpio. I can understand what you say: "This is just the way Sysconfig is set up as each GPIO instance is not allowed to have a different number of GPIO pins." 

 However, in the upper drop-down box and the lower drop-down box of sysconfig, only 4 different combinations of gpio instances can be combined. How did the 10 combinations come about?

Use Peripheral: GGIO0/1
Use Case        : GPIO0/1
2 * 2 = 4

So how to understanding there are ten instance of gpio modules? 

Or, in the sysconfig settings, there are only two instances of GPIO0: GPIO0/1, corresponding to the code: CSL_GPIO0_BASE/CSL_GPIO1_BASE?
The wkup_gpio0 also have two instances: GPIO0/GPIO1, corresponding to the code: CSL_WKUP_GPIO0_BASE/CSL_WKUP_GPIO1_BASE?  If I don't assume this, then I won't be able to understand where GPIO2/3/4/5/6/7 comes from, because I don't see any introduction of GPIO2/3/4/5/6/7 in TRM and sysconfig.

Best Regards
Eason