SDCFCR-512M-388 SanDisk, SDCFCR-512M-388 Datasheet - Page 73

• Manufacturer Part Number: SDCFCR-512M-388
• Description: COMPACT FLASH IND 512MB
• Manufacturer: SanDisk

Specifications of SDCFCR-512M-388

• Memory Size: 512MB
• Memory Type: CompactFLASH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SanDisk Industrial Grade CompactFlash 5000
5.1.25
The Write Buffer command enables the host to overwrite contents of the card's
sector buffer with any data pattern desired. This command has the same
protocol as the Write Sector(s) command and transfers 512 bytes.
5.1.26
The Write DMA command in Table 71 performs in a similar manner to WRITE
SECTOR(S) except for the following:
The host initialized the DMA channel prior to issuing the command. Data
transfers are qualified by DMARQ and are performed by the DMA channel.
The device issues only one interrupt per command to indicate that data
transfer has terminated and status is available.
During the execution of a Write DMA command, the device provides status of
the BSY bit or the DRQ bit until the command is completed.
5.1.27
This command is provided for compatibility purposes and is similar to the
Write Sector(s) command except that it writes 516 bytes instead of 512 bytes.
Only single sector Write Long operations are supported. The transfer consists
of 512 bytes of data transferred in word mode followed by 4 bytes of ECC
transferred in byte mode. Because of the unique nature of the solid-state
CompactFlash Memory Card, it cannot use the four bytes of ECC transferred
by the host. The card discards these four bytes and writes the sector with
valid ECC fields. This command has the same protocol as the Write Sector(s)
command.
© 2007 SanDisk® Corporation
Write Buffer–E8H
Write DMA Command–CAH, CBH
Write Long Sector–32H, 33H
Table 71: Write DMA Command
Table 70: Write Buffer
66
Product Manual
July 2007