Question

Difference between synchronous load and asynchronous load in register

Answer 1

Synchronous vs. Asynchronous

Synchronous data transfer: sender and receiver use the same clock signal
supports high data transfer rate
needs clock signal between the sender and the receiver
requires master/slave configuration
Asynchronous data transfer: sender provides a synchronization signal to the receiver before starting the transfer of each message
does not need clock signal between the sender and the receiver
slower data transfer rate

Notes:
There are many serial data transfer protocols. The protocols for serial data transfer can be grouped into two types: synchronous and asynchronous. For synchronous data transfer, both the sender and receiver access the data according to the same clock. Therefore, a special line for the clock signal is required. A master (or one of the senders) should provide the clock signal to all the receivers in the synchronous data transfer.