SDCFCR-001G-388 SanDisk, SDCFCR-001G-388 Datasheet - Page 66

• Manufacturer Part Number: SDCFCR-001G-388
• Description: COMPACT FLASH IND 1GB
• Manufacturer: SanDisk

Specifications of SDCFCR-001G-388

• Memory Size: 1GB
• Memory Type: CompactFLASH
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SanDisk Industrial Grade CompactFlash 5000
5.1.12
The Read Long command performs similarly to the Read Sector(s) command
except that it returns 516 bytes of data instead of 512 bytes. During a Read
Long command, the card does not check the ECC bytes to determine if there
has been a data error. Only single sector read long operations are supported.
The transfer consists of 512 bytes of data transferred in word mode followed
by 4 bytes of random data transferred in byte mode. Random data is returned
instead of ECC bytes because of the nature of the ECC system used. This
command has the same protocol as the Read Sector(s) command.
5.1.13
This command reads from 1 to 256 sectors as specified in the Sector Count
Register. A sector count of 0 requests 256 sectors. The transfer begins at the
sector specified in the Sector Number Register. When this command is issued,
and after each sector of data (except the last one) has been read by the host,
the CompactFlash card sets BSY, puts the sector of data in the buffer, sets
DRQ, clears BSY, and generates an interrupt. The host then reads the 512
bytes of data from the buffer.
On command completion, the Command Block registers contain the cylinder,
head and sector number of the last sector read. If an error occurs, the read
terminates at the sector where the error occurred. The Command Block
registers contain the cylinder, head, and sector number of the sector where
the error occurred. The flawed data is pending in the sector buffer.
5.1.14
This command is identical to the Read Sectors command, except that DRQ is
never set and no data is transferred to the host. When the command is
accepted, the card sets BSY.
When the requested sectors have been verified, the card clears BSY and
generates an interrupt. Upon command completion, the Command Block
© 2007 SanDisk® Corporation
Read Long Sector–22H, 23H
Read Sector(s)–20H, 21H
Read Verify Sector(s)–40H, 41H
Table 54: Read Long Sector
Table 55: Read Sector(s)
59
Product Manual
July 2007