Device ID in SC16IS7X2 and SC16IS7X0

[mrenzi]

Hi all,

I have a hardware solution where I can plug via I2C different modules. Some of these modules are serial interfaces with both SC16IS752 or SC16IS750, and dynamically add serial ports to the system.

The problem is I cannot figure out how to know if the device is a 2 UART chip or a single UART one.

Is there any register I can read from these chips to exactly know how many UARTs I'm getting?

Thanks in advance,

Mariano.

[lisettelozano]

Hello Mariano,

The SC16IS752 it is dual full-duplex UART and the SC16IS750 is single full-duplex UART. You may want to check section 7.2 and 7.3 of the datasheet for SC16IS752.

Have a great day,

Paulina

[mrenzi]

Thanks for for reply, Paulina.

I'm fully aware of that, but my question is if there is a way to identify them via firmware. My system adds these virtual UARTs to the "UART pool", so I NEED to know if the chip is giving me one or two UARTs.

Thanks,

Mariano.