DS705 XILINX [Xilinx, Inc], DS705 Datasheet - Page 35

• Manufacturer Part Number: DS705
• Description: XA Spartan-3A DSP Automotive FPGA Family Data Sheet
• Manufacturer: XILINX [Xilinx, Inc]

Block RAM Timing
Table 34: Block RAM Timing
DS705 (v1.1) January 20, 2009
Product Specification
Notes:
1.
Clock-to-Output Times
T
T
Setup Times
T
T
T
T
T
Hold Times
T
T
T
T
T
Clock Timing
T
T
Clock Frequency
F
T
T
RCKO_DOA_NC
RCKO_DOA
RCCK_ADDR
RDCK_DIB
RCCK_ENB
RCCK_WEB
RCCK_RST
RCKC_ADDR
RDCK_DIB
RCKC_ENB
RCKC_WEB
RCKC_REGCE
BPWH
BPWL
BRAM
RCCK_REGCE
RCKC_RST
Symbol
The numbers in this table are based on the operating conditions set forth in
R
When reading from block RAM, the delay from the active transition at the CLK input to data
appearing at the DOUT output
Clock CLK to DOUT output (with output register)
Setup time for the ADDR inputs before the active transition at the CLK input of the block
RAM
Setup time for data at the DIN inputs before the active transition at the CLK input of the
block RAM
Setup time for the EN input before the active transition at the CLK input of the block RAM
Setup time for the WE input before the active transition at the CLK input of the block RAM
Setup time for the CE input before the active transition at the CLK input of the block RAM
Setup time for the RST input before the active transition at the CLK input of the block RAM
Hold time on the ADDR inputs after the active transition at the CLK input
Hold time on the DIN inputs after the active transition at the CLK input
Hold time on the EN input after the active transition at the CLK input
Hold time on the WE input after the active transition at the CLK input
Hold time on the CE input after the active transition at the CLK input
Hold time on the RST input after the active transition at the CLK input
High pulse width of the CLK signal
Low pulse width of the CLK signal
Block RAM clock frequency
Description
www.xilinx.com
XA Spartan-3A DSP Automotive FPGA Family Data Sheet
Table
8.
Speed Grade
0.46
0.33
0.60
0.75
0.40
0.25
0.10
0.10
0.10
0.10
0.10
0.10
1.79
1.79
Min
0
-
-
-4
Max
2.80
1.45
280
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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