Burst mode (data transmission)
Burst mode (also burst mode or English burst mode ) is a term from the computer technology. It is a transfer mode for accelerating read or write operations on storage units.
Unlike the so-called word-mode (Engl. Word-at-a-time mode ) are transmitted in burst mode larger data blocks as a continuous bundle of smaller data units would have to be done without some initialization for each of these subunits new. For example, a cache line of 16 bytes can be transmitted as a bundle of four data units of 4 bytes.
One important example is DRAM . To access a certain memory location, first the "row" address half (via RAS cycle) and then the "column" address half (via CAS cycle) must be transmitted to the memory module before it can deliver the requested data (or to the Accept writing). In burst mode, only a single RAS cycle is carried out in advance if this address part remains identical for the following bytes. Then only CAS cycles are used to transfer the data. The access speed can thereby be increased by a factor of four.
There are burst accesses z. B. also with the cache or the PCI bus .
Individual evidence
- ↑ Mark Volcici (TU Wien): Current Storage Technologies (RAM) , 2007, p. 16 ( Memento of the original from September 23, 2010 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (accessed on June 19, 2011)
