Read/write characteristics (6800 mode) – Xilinx Virtex-5 FPGA ML561 User Manual

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Virtex-5 FPGA ML561 User Guide

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133

UG199 (v1.2.1) June 15, 2009

Hardware Schematic Diagram

R

Read/Write Characteristics (6800 Mode)

Table C-7

list the read and write timing parameters in 6800 mode. The associated

waveforms for these parameters are illustrated in

Figure C-7

.

Table C-7:

Read/Write Characteristics in 6800 Mode

Parameter

Signal

Symbol

Min

Typ

Max

Unit

Address Setup Time

RS

T

AS

13

-

-

ns

Address Hold Time

T

AH

17

-

-

ns

Data Setup Time

DB7 to DB0

T

DS

35

-

-

ns

Data Hold Time

T

DH

13

-

-

ns

Access Time

T

ACC

-

-

125

ns

Output Disable Time

T

OD

10

-

90

ns

System Cycle Time

RS

T

CYC

400

-

-

ns

Enable Pulse Width

Read/Write

E_RD

T

PWR

125

-

ns

T

PWW

55

-

ns

Figure C-7:

Read/Write Timing Waveforms (6800 Mode)

RS

RW

CS1B

E

WRITE

DB0-DB7

READ

UG199_C_07_050106

T

AS

T

AH

T

CYC

T

PWR

T

ACC

T

OD

T

PWW

T

DS

T

DH

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