AR# 40737

描述

This section of the MIG Design Assistant focuses on the Self-Refresh operation, defined by the JEDEC Specification, as it applies to the MIG Spartan-6MCB designs.

解决方案

The Self-Refresh operation is defined in section 4.10 of the JEDEC Specification JESD79-2 DDR3 SDRAM Standard and 2.10 of the JESD79-3 DDR2 SDRAM Standard, and can be used to save power by powering down the memory controller and placing the memory into a self-refresh state.

This feature is supported by the Spartan-6 MCB for LPDDR, DDR2, and DDR3 memories. For more information, refer tothe Spartan-6 FPGA Memory Controller User Guide(UG388); see the MCB Operation -> Self-Refresh section:
http://www.xilinx.com/support/documentation/ip_documentation/ug388.pdf

NOTE: For information on how Auto-Refresh is used with the MIG Spartan-6 MCB, see (Xilinx Answer 34154).

See also:
(Xilinx Answer 36020) Signal 'selfrefresh_enter' is floating in the generated MIG design. Should this be left floating in a user design?
(Xilinx Answer 41309)Do I need to add a TIG to SELFREFRESH_MCB_REQ if I enable Self-Refresh on the MCB?
(Xilinx Answer 41310)How to use Self-Refresh with the Spartan-6 Suspend feature

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