How to use the automatic address detection for SC16IS740, SC16IS750, SC16IS760

[mikami]

Hi,there.

I need to fix the issue the following,

How to use the automatic address detection for SC16IS740, SC16IS750, SC16IS760?

I'm not sure about the method.

I've made the following list.

UART_REG_LCR <= 0xBF

UART_REG_XOFF2 <= hwid 
UART_REG_EFR <= 0x20

UART_REG_LCR <= 0x00

But it's doesn't work.

Please let me know if Y have any advises.

Best

Masa

[guoweisun]

Hi

Can you help and confirm below information when you implement ADT function?

1: what is the value about EFCR[0]?

2:can you check IER bit 2 value?

3: double check your hwid

Additional I attached the app note about ADT function introduce.

Thanks!

[mikami]

Hi,Thanks.

1: what is the value about EFCR[0]?

→　Now I'm trying to set it at 0x30. but Is It wrong?

   The Answer is 0x31 right?

2:can you check IER bit 2 value?

→IER bit 2 is [1].

3: double check your hwid

Ok.I see.

Kindly regarads

Masa

[guoweisun]

Yes,you can set EFCR as 0X31 to try again!