XC4VFX40-11FFG672C Xilinx Inc, XC4VFX40-11FFG672C Datasheet - Page 341

• Manufacturer Part Number: XC4VFX40-11FFG672C
• Description: IC FPGA VIRTEX-4 FX 40K 672-FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX40-11FFG672C

• Number Of Logic Elements/cells: 41904
• Number Of Labs/clbs: 4656
• Total Ram Bits: 2654208
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Virtex-4 FPGA User Guide
UG070 (v2.6) December 1, 2008
IDELAYCTRL Overview
R
IDELAYCTRL Primitive
IDELAYCTRL Ports
If the IDELAY or ISERDES primitive is instantiated with the IOBDELAY_TYPE attribute
set to FIXED or VARIABLE, the IDELAYCTRL module must be instantiated. The
IDELAYCTRL module continuously calibrates the individual delay elements (IDELAY) in
its region (see
temperature variations. The IDELAYCTRL module calibrates IDELAY using the user
supplied REFCLK.
Figure 7-13
RST - Reset
The reset input pin (RST) is an active-High asynchronous reset. IDELAYCTRL must be
reset after configuration (and the REFCLK signal has stabilized) to ensure proper IDELAY
operation. A reset pulse width T
after configuration.
IDELAY U1
//Set IOBDELAY_TYPE attribute to VARIABLE for Variable Delay Mode
//synthesis attribute IOBDELAY_TYPE of U1 is "VARIABLE";
//synthesis attribute IOBDELAY_VALUE of U1 is 0;
(
);
O(data_output)
I(data_input),
C(clkdiv),
CE(dlyce),
INC(dlyinc),
RST(dlyrst)
shows the IDELAYCTRL primitive.
Figure 7-15, page
Figure 7-13: IDELAYCTRL Primitive
www.xilinx.com
343), to reduce the effects of process, voltage, and
IDELAYCTRL_RPW
REFCLK
RST
IDELAYCTRL
ug070_7_13_080104
RDY
is required. IDELAYCTRL must be reset
ILOGIC Resources
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