参数资料
型号: SFCF2048H2BU2TO-I-MS-517-STD
厂商: Swissbit NA Inc
文件页数: 56/102页
文件大小: 0K
描述: FLASH SLC UDMA/MDMA/PIO 2GB
标准包装: 1
系列: C-440
存储容量: 2GB
存储器类型: CompactFlash?
其它名称: 1052-1094
10 CF-ATA command description
This section defines the software requirements and the format of the commands the Host sends to the Card.
Commands are issued to the Card by loading the required registers in the command block with the supplied
parameters, and then writing the command code to the Command Register. There are three classes of command
acceptance, all dependent on the host not issuing commands unless the Card is not busy (BSY is ‘0’).
Class 1: Upon receipt of a Class 1 command, the Card sets BSY within 400ns.
Class 2: Upon receipt of a Class 2 command, the Card sets BSY within 400ns, sets up the sector buffer for a
write operation, sets DRQ within 700μs, and clears BSY within 400ns of setting DRQ.
Class 3:Upon receipt of a Class 3 command, the Card sets BSY within 400ns, sets up the sector buffer for a
write operation, sets DRQ within 20ms (assuming no re-assignments), and clears BSY within 400ns of
setting DRQ.
For reasons of backward compatibility some commands are implemented as ‘no operation’ NOP.
Table 54 summarizes the CF-ATA command set with the paragraphs that follow describing the individual
commands and the task file for each.
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.00
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
C-440_data_sheet_CF-HxBU_Rev100.doc
Page 56 of 102
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