XC4VFX20 XILINX [Xilinx, Inc], XC4VFX20 Datasheet - Page 13

• Manufacturer Part Number: XC4VFX20
• Description: DC and Switching Characteristics
• Manufacturer: XILINX [Xilinx, Inc]

Since individual family members are produced at different
times, the migration from one category to another depends
completely on the status of the fabrication process for each
device.
Testing of Switching Characteristics
All devices are 100% functionally tested. Internal timing
parameters are derived from measuring internal test pat-
terns. Listed below are representative values. For more
specific, more precise, and worst-case guaranteed data,
PowerPC Switching Characteristics
Consult the
Table 15: PowerPC 405 Processor Clocks Absolute AC Characteristics
DS302 (v3.2) April 10, 2008
Product Specification
Notes:
1.
2.
3.
4.
Characteristics when APU Not Used
Characteristics when APU Used
CPMC405CLOCK frequency
CPMDCRCLK
CPMFCMCLK
JTAGC405TCK frequency
PLBCLK
BRAMDSOCMCLK
BRAMISOCMCLK
CPMC405CLOCK frequency
CPMDCRCLK
CPMFCMCLK
JTAGC405TCK frequency
PLBCLK
BRAMDSOCMCLK
BRAMISOCMCLK
Worst-case DCM output clock jitter is included in these specifications.
The theoretical maximum frequency of this clock is one-half the CPMC405CLOCK. However, the achievable maximum is system dependent, and will
be much less.
The theoretical maximum frequency of these clocks is equal to the CPMC405CLOCK. Integer clock ratios are required for the CPMC405CLOCK and
BRAMDSOCMCLK, CPMC405CLOCK and BRAMISOCMCLK, CPMC405CLOCK and CPMDCRCLK, CPMC405CLOCK and CPMFCMCLK, and
CPMC405CLOCK and PLBCLK. The integer ratios can be different for each interface. However, the achievable maximum is system dependent.
Maximum operating frequency of CPMC405CLOCK is specified with the input pin TIEC405DISOPERANDFWD connected to a logic 1.
(3)
(3)
PowerPC 405 Processor Block Reference Guide
R
Description
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(2)
(2)
(1,4)
(1,4)
Min
NA
0
0
0
0
0
0
0
0
0
0
0
0
0
www.xilinx.com
-12
Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
166.5
Max
450
450
225
450
450
450
333
333
333
333
333
333
NA
for further information.
All specifications are always representative of worst-case
supply voltage and junction temperature conditions.
use the values reported by the static timing analyzer (TRCE
in the Xilinx Development System) and back-annotate to the
simulation net list. Unless otherwise noted, values apply to
all Virtex-4 devices.
Min
Speed Grade
NA
0
0
0
0
0
0
0
0
0
0
0
0
0
-11
137.5
Max
400
400
200
400
400
400
275
275
275
275
275
275
NA
Min
NA
0
0
0
0
0
0
0
0
0
0
0
0
0
-10
116.5
Max
350
350
175
350
350
350
233
233
233
233
233
233
NA
Units
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
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