How to determine the correspondence between ADC external pins of 5748G and channels of ADCx？

[2787258103]

Hello teachers,
When using the 5748G ADC, you encounter problems corresponding to external pins and ADC channels. Please guide. At present, there is only a user reference manual, but no correspondence between external pins and channels of the ADC module has been found. Examples are as follows：

Why does PB [4] correspond to ADC1_CH9?

[2787258103 · Accepted solution]

After closer inspection of the manual, I found that the correspondence between the hardware channels mentioned in Chapter 32.1.4 does not seem to be linear.