M1AFS600-PQ208 Datasheet, PDF (58/334 Pages) Microsemi Corporation – Fusion Family of Mixed Signal FPGAs

Device Architecture
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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