Xilinx Zynq-7000 User Manual

Zynq-7000 AP SoC and 7 Series FPGAs MIS v4.1 494
UG586 November 30, 2016
www.xilinx.com
Chapter 3: RLDRAM II and RLDRAM 3 Memory Interface Solutions
An additional write/read is performed so the read bus is driven to a different value. This is
mostly required in hardware to make sure that the read calibration can distinguish the
correct data pattern.
After the third stage calibration completes, init_calib_complete is asserted, signifying
successful completion of the calibration process.
X-Ref Target - Figure 3-71
Figure 3-71: Write and Read for Second Stage Read Calibration (Pattern Shown for RLDRAM II)
X-Ref Target - Figure 3-72
Figure 3-72: Write and Read for Third Stage Read Calibration (Pattern Shown for RLDRAM II)
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Xilinx Zynq-7000 Specifications

General

Series	Zynq-7000
Number of Cores	Dual-core
Processor Speed	Up to 1 GHz
Device Type	SoC
Logic Cells	Up to 350K
DSP Slices	Up to 900
External Memory Interfaces	DDR3, DDR2, LPDDR2
I/O Standards	LVCMOS, HSTL, SSTL
Operating Temperature	-40°C to +100°C (Industrial), 0°C to +85°C (Commercial)
Package Options	Various BGA packages
I/O Voltage	3.3V