S6E2CCAJOA GPIO Config Question

In 《FM4_S6E2CC_Lab1_Blinking.pdf》, there is a gpio config :

bFM4_GPIO_ADE_AN08 = 0; // AN08 to GPIO (bit 08 set to zero)

Then, I find the Macro in PDL s6e2cc.h:

#define bFM4_GPIO_ADE_AN08                        *((volatile uint32_t*)(0x42DEA020UL))

I am trying to know the meaning of the code(bFM4_GPIO_ADE_AN08 = 0;)。

But，I can't find the corresponding register or any explanation about the address 0x42DEA020UL。

Could you tell me where to find it？

Thank you！