What is int_width about in arm_nn_activations_direct_q7 about

Hi all, recently, I am trying to implement neural networks on one of my Cortex-M devices. However, I wasn't know what "int_width" in arm_nn_activations_direct_q7 is about. The definition in the document...
What is int_width about in arm_nn_activations_direct_q7 about

Hi all, recently, I am trying to implement neural networks on one of my Cortex-M devices. However, I wasn't know what "int_width" in arm_nn_activations_direct_q7 is about. The definition in the document...
about ulink2

Can keil ulink2 simulate C167 devices? I think C167 isn't supported by it for C167 have not a OCDS port. If can, please tell me how to connect ulink to C167.
about sio.c

What is sio.c file? What is it used for? I can't find a clear answer on line. Please help. Thanks
About SBUF

Hi, in a serial communication program, do I have to "SETB P3.0" in order to receive from the serial port ??