DS90UB9702-Q1: DS90UB971,Dual independent input and output simultaneously

Part Number: DS90UB9702-Q1

I want to achieve the function of the following block diagram. I can set the input and output of any port, but I can't achieve simultaneous input and output of two cameras. I also don't know how to perform simultaneous through of two IIC and GPIO. Could you provide me with a large block diagram of the drivers for DS90UB9702 and DS90UB971 or an example for me to test myself?

for example:
This is one of my single-channel configurations
REG=0x7a,0x0c,0x04
REG=0x7a,0xe4,0x00
REG=0x7a,0x01,0x21
REG=0x7a,0x4c,0x24
DELAY=100
REG=0x7a,0x58,0x5e
REG=0x7a,0xA0,0x00
REG=0x7a,0x5c,0x30
REG=0x7a,0x5d,0x36
REG=0x7a,0x65,0x36
REG=0x7a,0xb0,0x04
REG=0x7a,0x1f,0x00
REG=0x7a,0xc9,0x1e
REG=0x7a,0xb0,0x1c
REG=0x7a,0xb1,0x92
REG=0x7a,0xb2,0x40
REG=0x7a,0x32,0x12
REG=0x7a,0x33,0x03
REG=0x7a,0x20,0x04