參數(shù)資料
型號: XCCACE256-I
廠商: Xilinx Inc
文件頁數(shù): 39/69頁
文件大?。?/td> 0K
描述: IC 256MBIT ACE FLASH CARD
標準包裝: 1
存儲容量: 256Mb
存儲器類型: FLASH
System ACE CompactFlash Solution
44
DS080 (v3.0) April 7, 2014
Product Specification
R
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
Check if Ready for a Command Control
Flow Process
Before reading or writing sector data, it is important to make
sure that the CompactFlash device is ready for a command.
This is done by polling the RDYFORCFCMD bit (bit 0) in the
second byte of the STATUSREG register (MPU byte
address 05h) until it is set to a 1. This control flow process is
shown in Figure 24.
Figure 24: Check if Ready for a Command Control Flow Process
Check If Ready
For Command
Get Command
Ready Status
Ready For
Command?
Timer Expired?
Decrement timer
variable
Initialize timer variable
Busy.
Return timeout
error.
Ready.
Return success.
No
Yes
No
Yes
Read RDYFORCMD bit
from byte address 05h
DS080_50_051701
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