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參數(shù)資料
| 型號： | 7P512CFA4500C25 |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | PROM |
| 英文描述： | 256M X 16 FLASH 3V PROM CARD, 250 ns, XMA50 |
| 封裝： | CARD-50 |
| 文件頁數(shù)： | 2/32頁 |
| 文件大小： | 264K |
| 代理商： | 7P512CFA4500C25 |
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White Electronic Designs Corporation Marlborough, MA (508) 485-4000
CompactFlashTM Cards
CFA45 Series
White Electronic Designs
DATA REGISTER
DIRECTION - This register is bi-directional for the drive and host.
ACCESS RESTRUCTIONS - This register can be written or the content is valid on read when DRQ is set to one.
FUNCTIONAL DESCRIPTION - The data register is 16-bit wide.
BIT DESCRIPTION
15
14
13
12
11
10
9
8
Data (15:8)
76
54
3
2
1
0
Data (7:0)
PCMICA CONFIGURATION OPTION REGISTER
DIRECTION - This register is read-only by host.
FUNCTION DESCRIPTION - Direct map to 0x200H in the Attribute Memory.
BIT DESCRIPTION
76
54
3
2
1
0
SRESET
LevlReq
Configuration Index
BIT 0~5 Configuration Index:
0 : common memory mode
1 : Independent IO mode
2 : Primary IO mode
3 : Secondary IO mode
BIT 6
LevlReq (level Mode IREQ#) : Level Mode Interrupts are selected when this bit is set to one, otherwise it is Pulse
Mode Interrupts.
BIT 7
SRESET (Soft Reset): Setting this bit to one places the card in the reset state. This is equivalent to assertion of
the RESET signal.
PCMICA CARD CONFIGURATION AND STATUS REGISTER
DIRECTION - This register is bi-directional for the drive and host.
FUNCTION DESCRIPTION - Direct map to 0x202H in the Attribute Memory.
BIT DESCRIPTION
76
54
3
2
1
0
SCDect
SigChg
IOis8
ResrV
SPKR/DASP
PwrDn
Intr
ResrV
BIT 0 Reserved
BIT 1 Intr (Interrupt Request Pending) : The real time status of the host interrupt signal pin.
BIT 2 PwrDn (Power Down): This bit will enable the power down mode.
BIT 3 SPKR/DASP: Setting this bit to 1 will enable DASP- to the BVD2 pin of the PCMCIA connector, otherwise, the BVD2
will be held at high-impedance.
BIT 4 ResrV: Reserved bit must be 0.
BIT 5 IOis8 (I/O Cycles Occur Only as 8-bit Transfer): When the host can provide I/O cycle only using the D7:D0 data
path, the PCMCIA software will set this bit to 1.
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