XC2S50 Xilinx, Inc., XC2S50 Datasheet - Page 35

• Manufacturer Part Number: XC2S50
• Description: Spartan-II 2.5V FPGA Family
• Manufacturer: Xilinx, Inc.

Spartan-II 2.5V FPGA Family: Functional Description
Module 2 of 4
28
ADDR_A
ADDR_B
CLK_A
CLK_B
WE_A
WE_B
DO_A
DO_B
EN_A
EN_B
DI_A
DI_B
Figure 33: Timing Diagram for a True Dual-Port Read/Write Block RAM Memory
ADDR
DOUT
1111
00
RST
CLK
DIN
WE
EN
MEM (00)
DISABLED
AAAA
Figure 32: Timing Diagram for Single-Port Block RAM Memory
00
T
BCCS
1111
00
AAAA
T
T
T
T
BPWH
BACK
BDCK
BECK
DDDD
T
00
AAAA
BCKO
READ
T
BWCK
MEM (00)
9999
VIOLATION
7E
1111
T
7E
BCCS
www.xilinx.com
1-800-255-7778
9999
9999
CCCC
0F
WRITE
BBBB
CCCC
AAAA
0F
T
0F
BPWL
BBBB
AAAA
BBBB
7E
1111
0F
READ
MEM (7E)
UNKNOWN
0000
0F
T
BCCS
DS001-2 (v2.2) September 3, 2003
UNKNOWN
DS001_33_061200
DISABLED
2222
2222
7E
8F
2222
Product Specification
1111
7E
DS001_34_061200
FFFF
2222
1A
FFFF
R