Chapter 3: Hardware Description

Table 3-6describes all the signals associated with QDRII component memories.

R

Table 3-6:QDRII Component Signal Summary

Board Signal Name(s)

Bits

Description

 

 

 

QDR2_SA[18:0]

19

QDRII Address

 

 

 

QDR2_CK_BY0_3_[P,N],

4

QDRII Differential Clock

QDR2_CK_BY4_7_[P,N]

 

 

 

 

 

QDR2_[R,W,DLL_OFF]_N

3

QDRII Control Signals

 

 

 

QDR2_D_BY[3:0]_B[8:0],

42

QDRII Write Data, Strobes, and Byte Write: Bytes 3:0

QDR2_K_BY0_3_[P,N],

 

 

QDR2_BW_BY[3:0]

 

 

 

 

 

QDR2_Q_BY[3:0]_B[8:0],

38

QDRII Read Data and Strobes: Bytes 3:0

QDR2_CQ_BY0_3_[P,N]

 

 

 

 

 

QDR2_D_BY[7:4]_B[8:0],

42

QDRII Write Data, Strobes, and Byte Write: Bytes 7:4

QDR2_K_BY4_7_[P,N],

 

 

QDR2_BW_BY[3:0]

 

 

 

 

 

QDR2_Q_BY[7:4]_B[8:0],

38

QDRII Read Data and Strobes: Bytes 7:4

QDR2_CQ_BY4_7_[P,N]

 

 

 

 

 

Notes:

1. QDR2_SA[18] is incorrectly labeled QDR2_NC_A3 in the ML561 schematics and layout file.

XAPP853: QDR II SRAM Interface for Virtex-5 Devices and its corresponding demo are included on the CD shipped with the ML561 Tool Kit.

For a complete list of FPGA #3 signals and their pin locations, refer to Appendix A, “FPGA Pinouts.”

Table 3-7describes all signals associated with RLDRAM II devices.

Table 3-7:RLDRAM II Component Signal Summary

Board Signal Name(s)

Bits

Description

 

 

 

RLD2_A[19:0], RLD2_BA[2:0]

23

RLDRAM II Address

 

 

 

RLD2_CK_BY0_1 _[P,N]

2

RLDRAM II Differential Clock

 

 

 

RLD2_CK_BY2_3 _[P,N]

2

RLDRAM II Differential Clock

 

 

 

RLD2_CS_BY[0_1,2_3]_N, RLD2_[REF,WE]_N,

8

RLDRAM II Control Signals

RLD2_DM_BY[0_1,2_3]_N, RLD2_QVLD_BY[0_1,2_3]

 

 

 

 

 

RLD2_DQ_BY[1:0]_B[8:0], RLD2_DK_BY0_1_[P,N],

24

RLDRAM II Data and Strobes: Bytes 1:0

RLD2_QK_BY[1:0]_[P,N]

 

 

 

 

 

RLD2_DQ_BY[3:2]_B[8:0], RLD2_DK_BY0_1_[P,N],

24

RLDRAM II Data and Strobes: Bytes 3:2

RLD2_QK_BY[3:2]_[P,N]

 

 

 

 

 

XAPP852, RLDRAM II Memory Interface for Virtex-5 FPGAs and its corresponding demo are included on the CD shipped with the ML561 Tool Kit.

26

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Virtex-5 FPGA ML561 User Guide

 

 

UG199 (v1.2) April 19, 2008

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Xilinx ML561 manual QDR2R,W,DLLOFFN