afs600 Actel Corporation, afs600 Datasheet - Page 60

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

The following error indications are possible for Read
operations:
Table 2-23 • Page Status Read Data Format
Table 2-24 • Page Status Bit Definition
2 -4 6
Page Status Bit(s)
31–8
7–4
3
2
1
0
Actel Fusion Programmable System Chips
1. STATUS = '01' when a single-bit data error was
2. STATUS = '10' when a double-bit error was
31
detected
addressed.
detected in the block addressed (note that the
error is uncorrected).
Write Count
and
8
The number of times the page addressed has been programmed/erased
Reserved; read as 0
Over Threshold indicator (see
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.
corrected
7
Reserved
within
4
the
the"Program Operation" section on page
block
A d v a n c e d v 1 . 4
Over Threshold Read Protected
3
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
status bits is shown in
Definition
Table
2
2-23, and the definition of the page
Write Protected
Table
2-42)
2-24.
1
Overwrite Protected
0