Design Advisory Master Answer Record for Spartan-6 FPGA

AR#	34856	Search For Another Answer
Topic	Block RAM
Last Updated	02/09/2012
Status	Active

Description

Design Advisory Answer Records are created for issues that are important to designs currently in progress and are selected to be included in the Xilinx Alert Notification System. This Answer Record lists the Design Advisories that have been communicated for the Spartan-6 FPGA products.  

Solution

For a complete list of Known Issues for Spartan-6 FPGAs, please see (Xilinx Answer 40000) for ISE 13.X and (Xilinx Answer 35180) for ISE 12.X.

Design Advisory Alerted on February 13, 2012:
02/10/2012 - (Xilinx Answer 46141) - Design Advisory for Spartan-6 - PLL CLKOUT3 Incorrect Phase Shift

Design Advisory Alerted on December 12, 2011:
12/5/2011 - (Xilinx Answer 45011) - Design Advisory for Spartan-6 - BUFPLL LOCK output always high in Bank 2

Design Advisory Alerted on November 21, 2011:
11/21/2011 - (Xilinx Answer 44174) - Design Advisory for techniques on properly synchronizing flip-flops and SRLs after startup

Design Advisories Alerted on November 7, 2011:
11/07/2011 - (Xilinx Answer 44192) - Design Advisory for Spartan-6 FPGA Speed File - Updates for Block RAM fMAX in Lower Power -1L Devices
11/07/2011 - (Xilinx Answer 44193) - Design Advisory for Spartan-6 FPGA Speed File - Updates for DCM Phase Alignment

Design Advisories Alerted on September 26, 2011:
09/26/2011 - (Xilinx Answer 44192) - Design Advisory for Spartan-6 FPGA Speed File - Updates for Block RAM fMAX in Lower Power -1L Devices
09/26/2011 - (Xilinx Answer 44193) - Design Advisory for Spartan-6 FPGA Speed File - Updates for DCM Phase Alignment

Design Advisory Alerted on July 11, 2011:
07/07/2011 - (Xilinx Answer 39999) - Design Advisory for Spartan-6 - 9K Block RAM Initialization Support

Design Advisories Alerted on April 18, 2011:
04/18/2011 - (Xilinx Answer 41520) - Design Advisory for Spartan-6 MCB - Removal of VCCINT restrictions to reach maximum DDR3 data rates
04/18/2011 - (Xilinx Answer 41083) - Design Advisory for Spartan-6 IODELAY2 - IODELAY2 Data Rate and Corresponding Bit Error Rates for New Mask Revision Silicon

Design Advisory Alerted on April 04, 2011:
04/04/2011 - (Xilinx Answer 41356) - Design Advisory for Lower Power Spartan-6 -1L Speed Grade - IODELAY2 Support Restricted to Tap 0

Design Advisories Alerted on March 01, 2011:
03/01/2011 - (Xilinx Answer 40387) Design Advisory for Spartan-6 Configuration - GCLK0 input can glitch at the end of configuration
02/23/2011 - (Xilinx Answer 40818) Design Advisory for Spartan-6 SelectIO - INTERM_XX not being appropriately turned on in BitGen for Spartan-6 FPGA inputs

Design Advisory Alerted on December 13, 2010:
12/13/2010 - (Xilinx Answer 39582) Design Advisory for Spartan-6 - When using POST_CONFIG_CRC the INIT_B pin can not be User I/O

Design Advisory Alerted on November 15, 2010:
11/11/2010 - (Xilinx Answer 38733) Design Advisory for Spartan-6 - LX100/LX100T SMAP x16 max CCLK frequency reduction

Design Advisories Alerted on October 18, 2010:
10/13/2010 - (Xilinx Answer 38408) Design Advisory for Spartan-6 - IODELAY2 - early edge delays, late edge delays, and single data bit corruption
10/14/2010 - (Xilinx Answer 35881) Design Advisory for 12.2 Timing/Spartan-6 - DRAM/RAMB instance not analyzed under PERIOD/FROM:TO constraint (Not added to timegroups using TNM)
Design Advisory Alerted on July 19, 2010:
07/19/2010 - (Xilinx Answer 35237) Design Advisory for Spartan-6 FPGA GTP Transceiver - SelectIO to GTP Crosstalk/SSO Guidelines
Design Advisories Alerted on June 14, 2010:
06/14/2010 - (Xilinx Answer 35978) Design Advisory for MIG Spartan-6 MCB - Last word of read burst fails in hardware - bitstream update required for all MCB designs
06/14/2010 - (Xilinx Answer 35976) Design Advisory for MIG Spartan-6 MCB - Design does not come out of reset and requires power-cycle to regain functionality - SW / IP update required
06/14/2010 - (Xilinx Answer 35818) Design Advisory for Spartan-6 FPGA - Memory Controller Block (MCB) Performance Change for DDR2 and DDR3 interfaces
Design Advisory Alerted on April 26, 2010:
04/20/2010 (Xilinx Answer 35237) Design Advisory for Spartan-6 FPGA GTP Transceiver - SelectIO to GTP Crosstalk/SSO Guidelines
Design Advisory Alerted on March 29, 2010:
3/25/2010 (Xilinx Answer 34712) Design Advisory for Spartan-6 FPGA Block RAM - 9K Simple Dual Port (SDP) Block RAM Initialization Incorrect
Design Advisories Alerted on March 22, 2010:
03/19/2010 (Xilinx Answer 34541) Design Advisory for Spartan-6 FPGA Block RAM - 9K Block RAM SDP Port Width Restriction
03/19/2010 (Xilinx Answer 34533) Design Advisory for Spartan-6 FPGA Block RAM - Address Space Overlap

Revision History
02/10/12 - Added 46141
12/12/11 - Updated title for 44174
12/05/11 - Added 45011
11/21/11 - Added 44174
11/07/11 - Updated 44192 and 44193
09/26/11 - Added 44192 and 44193
07/15/11 - Minor formatting changes
07/11/11 - Added 39999
04/18/11 - Adding 41520 and 41083, also link to 40000 for ISE software 13.1 Known Issues
04/04/11 - Adding 41356
03/01/11 - Added 40387 and 40818
12/13/10 - Added 39582
11/15/10 - Added 38733
10/15/10 - Added 38408 and 35881
07/16/10 - Added 35237
06/14/10 - Added 35978, 35976, and 35818
05/24/10 - Added 35180 for ISE software 12.1 Known Issues
04/26/10 - Added 35237
03/25/10 - Added 34712
03/24/10 - Minor format change
03/22/10 - Initial release 34541 and 34533