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High speed USB devices neglect

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High speed USB devices neglect

(a) Handshake packet

(b) Token packet

(c) PRE packet

(d) Data packet

The question was asked during an interview.

Asked question is from Programmable Communication Interface 8251 USART topic in portion Special Purpose Programmable Peripheral devices and their Interfacing of Microprocessor

1 Answer

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by (49.2k points)
Correct answer is (c) PRE packet

Explanation: PRE packets are only of importance to low-speed USB devices.

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