Answers Database
SPROM: Data I/O Programmers: Addresses for controlling programmable resets / reset polarity of Xilinx SPROM
Record #188
Product Family: Hardware
Product Line: 1700E
Product Part: 1700E
Problem Title:
SPROM: Data I/O Programmers: Addresses for controlling programmable resets / reset polarity
of Xilinx SPROM
Problem Description:
Urgency: standard
General Description:
The Xilinx specification for Xilinx PROM programmers specifies
that the polarity of the PROM Reset pin be set automatically
by the programmer interface software. For example, the Xilinx
HW130 software prompts the user for the desired
polarity at the beginning of the programming process, and
the actual procedure is transparent to the user.
However, for Data I/O programmers, the polarity
of the PROM Reset pin must be programmed by loading either 1's
or 0's into the appropriate addresses in memory--specifically
4 device-specific, contiguous address locations.
To program:
active high reset -> fill the area with ones
(fill each address location with FFH)
active low reset -> fill the area with zeros
(fill each address location with 00H)
Solution 1:
The memory locations of the programmable reset (in hex) are as follows:
1700 Series Proms:
----------------------------
1718D/L 8DC - 8DF
1736D/E/EL 11B8 - 11BB
1765D/L/E/EL 2000 - 2003
17128/D/L/E/EL 4000 - 4003
17256D/L/E/EL 8000 - 8003
17512/L 10000 - 10003
1701/L 20000 - 20003
1702L 40000 - 40003
1704L 80000 - 80003
SPARTAN Proms:
----------------------------
S05 2000 - 2003
S05XL 4000 - 4003
S10 4000 - 4003
S10XL 4000 - 4003
S20 8000 - 8003
S20XL 8000 - 8003
S30 8000 - 8003
S30XL 8000 - 8003
S40 10000 - 10003
S40XL 10000 - 10003
Certain third party programmers may map these addresses to
different memory locations.
End of Record #188 - Last Modified: 07/29/99 17:16 | 
