XC4VFX40-10FFG1152C Xilinx Inc, XC4VFX40-10FFG1152C Datasheet - Page 150

• Manufacturer Part Number: XC4VFX40-10FFG1152C
• Description: IC FPGA VIRTEX-4 FX 40K 1152FBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-4r

Specifications of XC4VFX40-10FFG1152C

• Number Of Logic Elements/cells: 41904
• Number Of Labs/clbs: 4656
• Total Ram Bits: 2654208
• Number Of I /o: 448
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 1152-BBGA, FCBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Chapter 4: Block RAM
FIFO Port Descriptions
150
Table 4-10
Table 4-10: FIFO I/O Port Names and Descriptions
DI
DIP
WREN
WRCLK
RDEN
RDCLK
RESET
DO
DOP
FULL
ALMOSTFULL
EMPTY
ALMOSTEMPTY
RDCOUNT
WRCOUNT
WRERR
RDERR
Port Name
lists the FIFO I/O port names and descriptions.
Direction
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
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Data input.
Parity-bit input.
Write enable. When WREN = 1, data will be written to
memory. When WREN = 0, write is disabled.
Clock for write domain operation.
Read enable. When RDEN = 1, data will be read to output
register. When RDEN = 0, read is disabled.
Clock for read domain operation.
Asynchronous reset of all FIFO functions, flags, and
pointers.
Data output, synchronous to RDCLK.
Parity-bit output, synchronous to RDCLK.
All entries in FIFO memory are filled. No additional write
enable is performed. Synchronous to WRCLK.
Almost all entries in FIFO memory have been filled.
Synchronous to WRCLK. The offset for this flag is user
configurable.
FIFO is empty. No additional read can be performed.
Synchronous to RDCLK.
Almost all valid entries in FIFO have been read.
Synchronous with RDCLK. The offset for this flag is user
configurable.
The FIFO data read pointer. It is synchronous with RDCLK.
The value will wrap around if the maximum read pointer
value has been reached.
The FIFO data write pointer. It is synchronous with
WRCLK. The value will wrap around if the maximum write
pointer value has been reached.
When the FIFO is full, any additional write operation
generates an error flag. Synchronous with WRCLK.
When the FIFO is empty, any additional read operation
generates an error flag. Synchronous with RDCLK.
Description
UG070 (v2.6) December 1, 2008
Virtex-4 FPGA User Guide
R