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AFS090 データシート(PDF) 65 Page - Microsemi Corporation

部品番号 AFS090
部品情報  Fusion Family of Mixed Signal FPGAs
PDF  334 Pages
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メーカー  MICROSEMI [Microsemi Corporation]
ホームページ  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

AFS090 データシート(HTML) 65 Page - Microsemi Corporation

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Fusion Family of Mixed Signal FPGAs
R e visio n 2
2 - 49
Erase Page Operation
The Erase Page operation is initiated when the ERASEPAGE pin is asserted. The Erase Page operation
allows the user to erase (set user data to zero) any page within the FB.
The use of the OVERWRITEPAGE and PAGELOSSPROTECT pins is the same for erase as for a
Program Page operation.
As with the Program Page operation, a STATUS of '01' indicates that the addressed page is not erased.
A waveform for an Erase Page operation is shown in Figure 2-37.
Erase errors include the following:
1. Attempting to erase a page that is Overwrite Protected (STATUS = '01')
2. Attempting to erase a page that is not in the Page Buffer when the Page Buffer has entered Page
Loss Protection mode (STATUS = '01')
3. The Write Count of the erased page exceeding the Write Threshold defined in the part
specification (STATUS = '11')
4. The ECC Logic determining that there is an uncorrectable error within the erased page (STATUS
= '10')
Figure 2-37 • FB Erase Page Waveform
CLK
ERASE
ADDR[17:0]
OVERWRITEPROTECT
PAGELOSSPROTECT
BUSY
STATUS[1:0]
Page
Valid



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