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Virtex-5 FPGA ML561 User Guide www.xilinx.com 133
UG199 (v1.2) April 19, 2008
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