XC4VFX60-11FFG672C Xilinx Inc, XC4VFX60-11FFG672C Datasheet - Page 250
XC4VFX60-11FFG672C
Manufacturer Part Number
XC4VFX60-11FFG672C
Description
IC FPGA VIRTEX-4 FX 60K 672-FBGA
Manufacturer
Xilinx Inc
Series
Virtex™-4r
Specifications of XC4VFX60-11FFG672C
Number Of Logic Elements/cells
56880
Number Of Labs/clbs
6320
Total Ram Bits
4276224
Number Of I /o
352
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
672-BBGA, FCBGA
For Use With
HW-V4-ML410-UNI-G - EVALUATION PLATFORM VIRTEX-4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Chapter 6: SelectIO Resources
250
IOStandard Attribute
Output Slew Rate Attributes
Output Drive Strength Attributes
Lower Capacitance I/O Attributes
The IOSTANDARD attribute is available to choose the values for an I/O standard for all
I/O buffers. The supported I/O standards are listed in
attribute uses the following syntax in the UCF file:
The IOSTANDARD default for single-ended I/O is LVCMOS25, for differential I/Os the
default is LVDS_25.
A variety of attribute values provide the option of choosing the desired slew rate for
single-ended I/O output buffers. For LVTTL and LVCMOS output buffers (OBUF, OBUFT,
and IOBUF), the desired slew rate can be specified with the SLEW attribute.
The allowed values for the SLEW attribute are:
•
•
The SLEW attribute uses the following syntax in the UCF file:
By the default, the slew rate for each output buffer is set to SLOW. This is the default used
to minimize the power bus transients when switching non-critical signals.
For LVTTL and LVCMOS output buffers (OBUF, OBUFT, and IOBUF), the desired drive
strength (in mA) can be specified with the DRIVE attribute.
The allowed values for the DRIVE attribute are:
•
•
•
•
•
•
•
The DRIVE attribute uses the following syntax in the UCF file:
To lower the effective input capacitance, some I/O resources do not have differential
driver circuits (LVDS_25, LVDSEXT_25, LVDS_25_DCI, LVDSEXT_25_DCI, ULVDS_25,
RSDS_25, and LDT_25). Using these I/Os improves the signal integrity of high-speed clock
inputs. Differential inputs and all output standards other than these are still supported by
low capacitance I/Os. Refer to
The allowed values for the CAPACITANCE attribute are:
•
INST <I/O_BUFFER_INSTANTIATION_NAME> IOSTANDARD=”<IOSTANDARD VALUE>”;
SLEW = SLOW (Default)
SLEW = FAST
INST <I/O_BUFFER_INSTANTIATION_NAME> SLEW = "<SLEW_VALUE>";
DRIVE = 2
DRIVE = 4
DRIVE = 6
DRIVE = 8
DRIVE = 12 (Default)
DRIVE = 16
DRIVE = 24
INST <I/O_BUFFER_INSTANTIATION_NAME> DRIVE = "<DRIVE_VALUE>";
DONT_CARE (Default)
www.xilinx.com
“Clock Capable I/O” in Chapter 1
Table
UG070 (v2.6) December 1, 2008
6-38. The IOSTANDARD
Virtex-4 FPGA User Guide
for further information.
R
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