The maximum payload of an isochronous data packet on the USB bus is 1023 bytes. Assuming that a device may send only one data packet per frame, what is the maximum bandwidth for a single isochronous...

The maximum payload of an isochronous data packet on the USB bus is 1023 bytes. Assuming that a device may send only one data packet per frame, what is the maximum bandwidth for a single isochronous device? What would the effect be of adding a third input line to the NAND gate selecting the PIO of Fig. 3-62(b) if this new line were connected to A13?