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P1AFS1500-FG256 Datasheet(PDF) 58 Page - Microsemi Corporation

Part No. P1AFS1500-FG256
Description  Fusion Family of Mixed Signal FPGAs
Download  334 Pages
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Maker  MICROSEMI [Microsemi Corporation]
Homepage  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

P1AFS1500-FG256 Datasheet(HTML) 58 Page - Microsemi Corporation

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Device Architecture
2-42
Revision 4
Flash Memory Block Pin Names
Table 2-19 • Flash Memory Block Pin Names
Interface Name
Width Direction
Description
ADDR[17:0]
18
In
Byte offset into the FB. Byte-based address.
AUXBLOCK
1
In
When asserted, the page addressed is used to access the auxiliary
block within that page.
BUSY
1
Out
When asserted, indicates that the FB is performing an operation.
CLK
1
In
User interface clock. All operations and status are synchronous to the
rising edge of this clock.
DATAWIDTH[1:0]
2
In
Data width
00 = 1 byte in RD/WD[7:0]
01 = 2 bytes in RD/WD[15:0]
1x = 4 bytes in RD/WD[31:0]
DISCARDPAGE
1
In
When asserted, the contents of the Page Buffer are discarded so that
a new page write can be started.
ERASEPAGE
1
In
When asserted, the address page is to be programmed with all zeros.
ERASEPAGE must transition synchronously with the rising edge of
CLK.
LOCKREQUEST
1
In
When asserted, indicates to the JTAG controller that the FPGA
interface is accessing the FB.
OVERWRITEPAGE
1
In
When asserted, the page addressed is overwritten with the contents of
the Page Buffer if the page is writable.
OVERWRITEPROTECT
1
In
When asserted, all program operations will set the overwrite protect bit
of the page being programmed.
PAGESTATUS
1
In
When asserted with REN, initiates a read page status operation.
PAGELOSSPROTECT
1
In
When asserted, a modified Page Buffer must be programmed or
discarded before accessing a new page.
PIPE
1
In
Adds a pipeline stage to the output for operation above 50 MHz.
PROGRAM
1
In
When asserted, writes the contents of the Page Buffer into the FB
page addressed.
RD[31:0]
32
Out
Read data; data will be valid from the first non-busy cycle (BUSY = 0)
after REN has been asserted.
READNEXT
1
In
When asserted with REN, initiates a read-next operation.
REN
1
In
When asserted, initiates a read operation.
RESET
1
In
When asserted, resets the state of the FB (active low).
SPAREPAGE
1
In
When asserted, the sector addressed is used to access the spare
page within that sector.


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