For DDR3, CKE should be pulled to VTT via a 40 Ohm resistor, not pulled to GND via 4.7 KOhm as is used in DDR2.
This provides termination for CKE for self-refresh operations.
The Zynq-7000 SoC PCB Design and Pin Planning Guide (UG933) has been updated with this information.
Answer Number | Answer Title | Version Found | Version Resolved |
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52540 | Zynq-7000 SoC - Frequently Asked Questions | N/A | N/A |
AR# 51778 | |
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Date | 05/17/2018 |
Status | Active |
Type | General Article |
Devices | |
Boards & Kits |