參數(shù)資料
型號(hào)： 7P640ATA2503C25
英文描述： Flash Memory Card(640M位閃速存儲(chǔ)器卡)
中文描述： 閃存卡（640M的位閃速存儲(chǔ)器卡）
文件頁(yè)數(shù)： 12/62頁(yè)
文件大?。?/td> 626K
代理商： 7P640ATA2503C25
7PxxxATA25xxC25
June 2000 Rev. 1 – ECO #12936
12
White Electronic Designs Corporation
(508) 366-5151
Configuration Register Specifications
This card supports four Configuration registers for the purpose of the configuration and observation of this
card.
1. Configuration Option Register (Address 200H)
This register is used for the configuration of the card configuration status and for the issuing the soft reset
to the card.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
SRESET
LevlREQ
INDEX
Note: initial value: 00H
Name
R/W
Function
SRESET
(HOST->)
R/W
Setting this bit to "1", places the card in the reset state (Card Hard Reset). This
operation is equal to Hard Reset, except this bit is not cleared. Then this bit is set to "0",
places the card in the reset state of Hard Reset (This bit is set to "0" by Hard Reset) .
Card configuration status is reset and the card internal initialized operation starts when
Card Hard Reset is executed, so the next access to the card should be the same
sequence as the power on sequence.
LevlREQ
(HOST->)
R/W
This bit sets to "0" when pulse mode interrupt is selected, and "1" when level mode
interrupt is selected.
INDEX
(HOST->)
R/W
This bit is used to select the operation mode of the card as follows.
When Power on, Card Hard Reset and Soft Reset, this data is "000000" for the purpose
of Memory card interface recognition.
INDEX bit assignment
INDEX bit
5
4
3
2
1
0
Card mode
Task File register address
Mapping mode
0
0
0
0
0
0
Memory card
0H to FH, 400H to 7FFH
memory mapped
0
0
0
0
0
1
I/O card
xx0H to xxFH
contiguous I/O mapped
0
0
0
0
1
0
I/O card
1F0H to 1F7H, 3F6H to 3F7H
primary I/O mapped
0
0
0
0
1
1
I/O card
170H to 177H, 376H to 377H
secondary I/O mapped
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