Read/write characteristics (6800 mode) – Xilinx Virtex-5 FPGA ML561 User Manual
Page 133
Virtex-5 FPGA ML561 User Guide
133
UG199 (v1.2.1) June 15, 2009
Hardware Schematic Diagram
R
Read/Write Characteristics (6800 Mode)
list the read and write timing parameters in 6800 mode. The associated
waveforms for these parameters are illustrated in
.
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