What is UDMA (Ultra Direct Memory Access)?
To help explain this we asked our Senior Digital Design Engineer, Chris Wood, to give us his explanation, “The advantages of UDMA over previous transfer modes are the use of double edge clocking, that is transferring data on both the rising and falling edge of the clock thereby doubling the data transfer rate per clock and increased reliability by the use of cyclical redundancy checking (CRC) for data transferred over the bus.” Basically, this new technology facilitates data transfer; dramatically increasing transfer speeds, allowing for a more streamlined workflow process. It’s important to note that UDMA technology is ONLY utilized when used in combination with UDMA enabled devices, such as Delkin’s FireWire 400/800 reader, the ExpressCard CF adapter, or CardBus32 UDMA adapter. Using Delkin’s CompactFlash Pro UDMA cards with Delkin’s UDMA enabled devices photographers will see an immediate increase in file transfer performance, up to 45 MB/s sustained transfer speed.
