ep2a40b724i8 Altera Corporation, ep2a40b724i8 Datasheet - Page 29

• Manufacturer Part Number: ep2a40b724i8
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

Altera Corporation
Figure 17. Bidirectional Dual-Port Memory Configuration
In addition to bidirectional dual-port memory, the ESB also supports
dual-port, and single-port RAM. Dual-port memory supports a
simultaneous read and write. Single-port memory supports independent
read and write.
configurations for an ESB.
Figure 18. Dual- & Single-Port Memory Configurations
Note to
(1)
Two single-port memory blocks can be implemented in a single ESB.
Dual-Port Memory
Single-Port Memory (1)
Figure
18:
Figure 18
data
address
wren
clocken
q
aclr
APEX II Programmable Logic Device Family Data Sheet
A
clock
[ ]
data[ ]
wraddress[ ]
wren
inclocken
inaclr
data[ ]
address[ ]
wren
inclocken
inaclr
A
A
inclock
inclock
A
[ ]
A
A
A
shows these different RAM memory port
[ ]
A
B
address
clocken
rdaddress[ ]
clock
outclocken
outclocken
outclock
outclock
data
wren
aclr
outaclr
outaclr
q
B
B
B
B
rden
[ ]
[ ]
[ ]
B
B
B
q[ ]
q[ ]
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