- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1974 > XCV812E-8FG900C (Xilinx Inc)IC FPGA 1.8V C-TEMP 900-FBGA PDF資料下載
參數(shù)資料
| 型號： | XCV812E-8FG900C |
| 廠商： | Xilinx Inc |
| 文件頁數(shù)： | 36/118頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FPGA 1.8V C-TEMP 900-FBGA |
| 產(chǎn)品變化通告： | FPGA Family Discontinuation 18/Apr/2011 |
| 標準包裝： | 1 |
| 系列： | Virtex®-E EM |
| LAB/CLB數(shù)： | 4704 |
| 邏輯元件/單元數(shù)： | 21168 |
| RAM 位總計： | 1146880 |
| 輸入/輸出數(shù)： | 556 |
| 門數(shù)： | 254016 |
| 電源電壓： | 1.71 V ~ 1.89 V |
| 安裝類型： | 表面貼裝 |
| 工作溫度： | 0°C ~ 85°C |
| 封裝/外殼： | 900-BBGA |
| 供應(yīng)商設(shè)備封裝： | 900-FBGA |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁
Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays
Module 2 of 4
DS025-2 (v3.0) March 21, 2014
20
R
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
Design Considerations
This section contains more detailed design information on
the following features.
Delay-Locked Loop . . . see page 20
BlockRAM . . . see page 24
SelectI/O . . . see page 31
Using DLLs
The Virtex-E FPGA series provides up to eight fully digital
dedicated on-chip Delay-Locked Loop (DLL) circuits which
provide zero propagation delay, low clock skew between
output clock signals distributed throughout the device, and
advanced clock domain control. These dedicated DLLs can
be used to implement several circuits which improve and
simplify system level design.
Introduction
As FPGAs grow in size, quality on-chip clock distribution
becomes increasingly important. Clock skew and clock
delay impact device performance and the task of managing
clock skew and clock delay with conventional clock trees
becomes more difficult in large devices. The Virtex-E series
of devices resolve this potential problem by providing up to
eight fully digital dedicated on-chip DLL circuits which pro-
vide zero propagation delay and low clock skew between
output clock signals distributed throughout the device.
Each DLL can drive up to two global clock routing networks
within the device. The global clock distribution network min-
imizes clock skews due to loading differences. By monitor-
ing a sample of the DLL output clock, the DLL can
compensate for the delay on the routing network, effectively
eliminating the delay from the external input port to the indi-
vidual clock loads within the device.
In addition to providing zero delay with respect to a user
source clock, the DLL can provide multiple phases of the
source clock. The DLL can also act as a clock doubler or it
can divide the user source clock by up to 16.
Clock multiplication gives the designer a number of design
alternatives. For instance, a 50 MHz source clock doubled
by the DLL can drive an FPGA design operating at 100
MHz. This technique can simplify board design because the
clock path on the board no longer distributes such a
high-speed signal. A multiplied clock also provides design-
ers the option of time-domain-multiplexing, using one circuit
twice per clock cycle, consuming less area than two copies
of the same circuit. Two DLLs in can be connected in series
to increase the effective clock multiplication factor to four.
The DLL can also act as a clock mirror. By driving the DLL
output off-chip and then back in again, the DLL can be used
to de-skew a board level clock between multiple devices.
In order to guarantee the system clock establishes prior to
the device “waking up,” the DLL can delay the completion of
the device configuration process until after the DLL
achieves lock.
By taking advantage of the DLL to remove on-chip clock
delay, the designer can greatly simplify and improve system
level design involving high-fanout, high-performance clocks.
Library DLL Symbols
Figure 21 shows the simplified Xilinx library DLL macro
symbol, BUFGDLL. This macro delivers a quick and effi-
cient way to provide a system clock with zero propagation
the two library DLL primitives. These symbols provide
access to the complete set of DLL features when imple-
menting more complex applications.
Figure 21: Simplified DLL Macro Symbol BUFGDLL
Figure 22: Standard DLL Symbol CLKDLL
Figure 23: High Frequency DLL Symbol
0ns
ds022_25_121099
O
I
CLK0
CLK90
CLK180
CLK270
CLK2X
CLKDV
LOCKED
CLKIN
CLKFB
RST
ds022_26_121099
CLKDLL
CLK0
CLK180
CLKDV
LOCKED
CLKIN
CLKFB
RST
ds022_027_121099
CLKDLLHF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XE8801AMI000WP | SENSING MACHINE WITH 16 + 10 BIT |
| XE8802MI035LF | IC DAS 16BIT FLASH 8K 100-LQFP |
| XE8805AMI028LF | IC DAS 16BIT FLASH 8K MTP 64LQFP |
| XE8807AMI026TLF | IC MCU LOW PWR MTP FLASH 32-TQFP |
| XIO2200AGGW | IC PCI-EXPRESS/BUS BRIDGE 176BGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XCV812E-8FG900I | 制造商:XILINX 制造商全稱:XILINX 功能描述:Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays |
| XCVR-040L31 | 制造商:WWP 功能描述: |
| XCW 10 | 制造商:G & J HALL 功能描述:COUNTERSINK HEXIBIT 10MM 制造商:G & J HALL 功能描述:COUNTERSINK, HEXIBIT, 10MM 制造商:G & J HALL 功能描述:COUNTERSINK, HEXIBIT, 10MM; Drill Bit Size Metric:10mm; Overall Length:30.5mm; SVHC:No SVHC (19-Dec-2012); Countersink Angle:90; Drill Bit Type:Countersink; Drill Point Diameter:10mm; External Diameter:10mm; Head Diameter:10mm; ;RoHS Compliant: NA |
| XCW10 | 制造商:G & J HALL 功能描述:COUNTERSINK HEXIBIT |
| XCW15 | 制造商:G & J HALL 功能描述:COUNTERSINK HEXIBIT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。