afs600 Actel Corporation, afs600 Datasheet - Page 52

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

Flash Memory Block Pin Names
Table 2-19 • Flash Memory Block Pin Names
2 -3 8
Interface Name
ADDR[17:0]
AUXBLOCK
BUSY
CLK
DATAWIDTH[1:0]
DISCARDPAGE
ERASEPAGE
LOCKREQUEST
OVERWRITEPAGE
OVERWRITEPROTECT
PAGESTATUS
PAGELOSSPROTECT
PIPE
PROGRAM
RD[31:0]
READNEXT
REN
RESET
SPAREPAGE
STATUS[1:0]
UNPROTECTPAGE
WD[31:0]
WEN
Actel Fusion Programmable System Chips
Width Direction
18
32
32
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Out
Out
Out
In
In
In
In
In
In
In
In
In
In
In
In
In
In
In
In
In
In
In
In
Byte offset into the FB. Byte-based address.
When asserted, the page addressed is used to access the auxiliary block within that page.
When asserted, indicates that the FB is performing an operation.
User interface clock. All operations and status are synchronous to the rising edge of this
clock.
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]
When asserted, the contents of the Page Buffer are discarded so that a new page write
can be started.
When asserted, the contents of the Page Buffer are discarded so that a new page write
can be started.
When asserted, indicates to the JTAG controller that the FPGA interface is accessing the
FB.
When asserted, the page addressed is overwritten with the contents of the Page Buffer if
the page is writable.
When asserted, all program operations will set the overwrite protect bit of the page being
programmed.
When asserted with REN, initiates a read page status operation.
When asserted, a modified Page Buffer must be programmed or discarded before
accessing a new page.
Adds a pipeline stage to the output for operation above 50 MHz.
When asserted, writes the contents of the Page Buffer into the FB page addressed.
Read data; data will be valid from the first non-busy cycle (BUSY = 0) after REN has been
asserted.
When asserted with REN, initiates a read-next operation.
When asserted, initiates a read operation.
When asserted, resets the state of the FB (active low).
When asserted, the sector addressed is used to access the spare page within that sector.
Status of the last operation completed:
00:
01:
10:
11:
When asserted, the page addressed is copied into the Page Buffer and the Page Buffer is
made writable.
Write data
When asserted, stores WD in the page buffer.
Successful completion
Read-/Unprotect-Page: single error detected and corrected
Write: operation addressed a write-protected page
Erase-Page: protection violation
Program: Page Buffer is unmodified
Read-/Unprotect-Page: two or more errors detected
Write: attempt to write to another page before programming current page
Erase-Page/Program: page write count has exceeded the 10-year retention threshold
A d v a n c e d v 1 . 4
Protection violation
Description