The bit packet that commands the device either to receive data or transmit data in transmission of USB asynchronous communication is
(a) Handshake packet
(b) Token packet
(c) PRE packet
(d) Data packet
I got this question in an international level competition.
The query is from Programmable Communication Interface 8251 USART topic in section Special Purpose Programmable Peripheral devices and their Interfacing of Microprocessor