XC4VFX12-11FFG668C Xilinx Inc, XC4VFX12-11FFG668C Datasheet - Page 352

• Manufacturer Part Number: XC4VFX12-11FFG668C
• Description: IC FPGA VIRTEX-4 FX 12K 668FCBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX12-11FFG668C

• Number Of Logic Elements/cells: 12312
• Number Of Labs/clbs: 1368
• Total Ram Bits: 663552
• Number Of I /o: 320
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 668-BBGA, FCBGA
• For Use With: HW-V4-ML403-UNI-G - EVALUATION PLATFORM VIRTEX-4HW-AFX-FF668-400 - BOARD DEV VIRTEX 4 FF668
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 7: SelectIO Logic Resources
352
To build an edge-triggered D-type flip-flop, use the topmost register (OFF1/TFF1). This
register is also the only register that can be configured as a level sensitive latch. The other
two registers (OFF2/TFF2 and OFF3/TFF3) are used to build various output DDR
registers. See
DDR.
The three data registers share a common clock enable (OCE). Similarly, the three 3-state
control registers share a different clock enable (TCE). The clock enable signals are default
active High. If left unconnected, the clock enable pin for the storage element defaults to the
active state.
All registers in OLOGIC have a common clock and synchronous or asynchronous set and
reset (SR and REV signals).
conjunction with REV.
For each storage element in the OLOGIC block, the SRVAL attributes are independent.
Synchronous or asynchronous set/reset (SRTYPE) can not be set individually for each
storage element in an OLOGIC block.
Most of the control signals have optional inverter. Any inverter placed on a control input is
automatically absorbed.
“Output DDR Overview (ODDR),” page 354
www.xilinx.com
Table 7-1
and
Table 7-2
describe the operation of SR in
for further discussion on output
UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
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