Transcend Information CompactFlash TS16G-64GCF400 - Manual (Page 33)

T T T S S S 1 1 1 6 6 6 G G G ~ ~ ~ 6 6 6 4 4 4 G G G C C C F F F 4 4 4 0 0 0 0 0 0
400X CompactFlash Card
Transcend Information Inc.
V1.0
33
An Ultra DMA capable device shall retain the previously selected Ultra DMA mode after executing a software reset sequence
or the sequence caused by receipt of a DEVICE RESET command if a SET FEATURES disable reverting to defaults
command has been issued. The device may revert to a Multiword DMA mode if a SET FEATURES enable reverting to default
has been issued. An Ultra DMA capable device shall clear any previously selected Ultra DMA mode and revert to the default
non-Ultra DMA modes after executing a power-on or hardware reset.
Both the host and device perform a CRC function during an Ultra DMA data burst. At the end of an Ultra DMA data burst the
host sends its CRC data to the device. The device compares its CRC data to the data sent from the host. If the two values do
not match, the device reports an error in the error register. If an error occurs during one or more Ultra DMA data bursts for any
one command, the device shall report the first error that occurred. If the device detects that a CRC error has occurred before
data transfer for the command is complete, the device may complete the transfer and report the error or abort the command
and report the error.
NOTE -If a data transfer is terminated before completion, the assertion of INTRQ should be passed through to the host
software driver regardless of whether all data requested by the command has been transferred.