U1AFS250-2FGG256YI
| Model | U1AFS250-2FGG256YI |
| Description | FPGA |
| PDF file | Total 334 pages (File size: 18M) |
| Chip Manufacturer | MICROSEMI |
Fusion Family of Mixed Signal FPGAs
The following error indications are possible for Read operations:
1. STATUS = '01' when a single-bit data error was detected and corrected within the block
addressed.
2. STATUS = '10' when a double-bit error was detected in the block addressed (note that the error is
uncorrected).
In addition to data reads, users can read the status of any page in the FB by asserting PAGESTATUS
along with REN. The format of the data returned by a page status read is shown in
and the
definition of the page status bits is shown in
Table 2-23 •
Page Status Read Data Format
31
8
7
4
3
2
Read Protected
1
Write Protected
0
Overwrite Protected
Write Count
Reserved Over Threshold
Table 2-24 •
Page Status Bit Definition
Page Status
Bit(s)
31–8
7–4
3
2
Definition
The number of times the page addressed has been programmed/erased
Reserved; read as 0
Over Threshold indicator (see the"Program
Read Protected; read protect bit for page, which is set via the JTAG interface and
only affects JTAG operations. This bit can be overridden by using the correct user
key value.
Write Protected; write protect bit for page, which is set via the JTAG interface and
only affects JTAG operations. This bit can be overridden by using the correct user
key value.
Overwrite Protected; designates that the user has set the OVERWRITEPROTECT
bit on the interface while doing a Program operation. The page cannot be written
without first performing an Unprotect Page operation.
1
0
Revision 3
2- 51
