AP-CF512ME3FR-NRJ Apacer, AP-CF512ME3FR-NRJ Datasheet - Page 27

• Manufacturer Part Number: AP-CF512ME3FR-NRJ
• Description: Memory Cards CFC 3 STD TMP 512MB COMPACT FLASH CARD
• Manufacturer: Apacer

Specifications of AP-CF512ME3FR-NRJ

• Rohs: yes
• Product: Compact Flash
• Memory Size: 512 MB
• Operating Supply Voltage: 3.3 V, 5 V
• Maximum Operating Temperature: + 70 C
• Dimensions: 42.8 mm x 36.4 mm x 3.3 mm
• Minimum Operating Temperature: 0 C

6.1.13 Read-Multiple – C4H
The Read- Multiple command is similar to the Read- Sector(s) command. Interrupts are not generated on
every sector, but on the transfer of a block which contains the number of sectors defined by a Set-
Multiple command.
Command execution is identical to the Read- Sectors operation except that the numbers of sectors
defined by a Set-Multiple command are transferred without intervening interrupts. DRQ qualification of the
transfer is required only at the start of the data block, not on each sector.
The block count of sectors to be transferred without intervening interrupts is programmed by the Set-
Multiple Mode command, which must be executed prior to the Read- Multiple command. When the Read-
Multiple command is issued, the Sector Count register contains the number of sectors (not the number of
blocks or the block count) requested. If the number of requested sectors is not evenly divisible by the
block count, as many full blocks as possible are transferred, followed by a final, partial block transfer.
The partial block transfer is for n sectors, where n = remainder (sector count/block count). If the Read-
Multiple command is attempted before the Set-Multiple Mode command has been executed or when
Read-Multiple commands are disabled, the Read-Multiple operation is rejected with an Aborted
Command error. Disk errors encountered during Read- Multiple commands are posted at the beginning of
the block or partial block transfer, but DRQ is still set and the data transfer will take place as it normally
would, including transfer of corrupted data, if any.
Interrupts are generated when DRQ is set at the beginning of each block or partial block. The error
reporting is the same as that on a Read-Sector(s) Command. This command reads from 1 to 256 sectors
as specified in the Sector Count register. A sector counts of 0 requests 256 sectors. The transfer begins
at the sector specified in the Sector Number register.
At 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.
Subsequent blocks or partial blocks are transferred only if the error was a correctable data error. All other
errors cause the command to stop after transfer of the block which contained the error.
© 2009 Apacer Technology Inc.
Command (7)
Sec Num (3)
Cyl High (5)
Cyl Low (4)
Sec Cnt (2)
Feature (1)
C/D/H (6)
Bit ->
Value Added
Value Added
Value Added
Value Added
7
X
AP-CFxxxxE3XR-XXXXJ
6
LBA
Compact Flash Ⅲ Ⅲ Ⅲ Ⅲ series
5
X
26
Cylinder High (LBA 23-16)
Sector Number (LBA 7-0)
Cylinder Low (LBA 15-8)
Drive
4
Sector Count
C4H
X
3
Head (LBA 27-24)
2
1
Rev. 1.6
0