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Memory Details

Memory Details

DDR400 and DDR2 Component Memories

The FPGA #1 device on the Virtex-5 FPGA ML561 Development Board is connected to DDR and DDR2 component memories, as shown in Figure 3-3.

Figure 3-3summarizes the distribution of DDR and DDR2 discrete component interface signals among the different banks of the FPGA #1 device.

BANK 25 (40)

BANK 6 (20)

 

BANK 21 (40)

BANK 4 (20)

BANK 22 (40)

 

Global Clock Inputs

 

BANK 17 (40)

BANK 2 (20)

BANK 18 (40)

 

Voltage Control

 

BANK 13 (40)

 

 

DDR Components

 

 

DQ 0, 1, 2

(Configuration)

 

BANK 11 (40)

BANK 0

BANK 12 (40)

DDR Components

 

USB Controls

DQ 3 & Controls

 

 

BANK 15 (40)

BANK 1 (20)

 

DDR2 Component

DDR2 Component

 

DQ 0, 1

Address

 

BANK 19 (40)

BANK 3 (20)

BANK 20 (40)

DDR2 Component

DDR2 Component

RS232

DQ 2, 3

Controls

Inter-FPGA MII Links

BANK 23 (40)

BANK 5 (20)

 

GTP I/O

BANK 126

BANK 122

BANK 118

BANK 114

BANK 112

BANK 116

BANK 120

BANK 124

UG199_c3_03_050106

Figure 3-3:FPGA #1 Banks for DDR400 and DDR2 Component (Top View)

Virtex-5 FPGA ML561 User Guide

www.xilinx.com

21

UG199 (v1.2) April 19, 2008

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Xilinx ML561 manual Memory Details, DDR400 and DDR2 Component Memories