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參數(shù)資料
| 型號(hào)： | XCV405E-6FG676I |
| 廠商： | Xilinx Inc |
| 文件頁(yè)數(shù)： | 43/118頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC FPGA 1.8V 676-BGA |
| 產(chǎn)品變化通告： | FPGA Family Discontinuation 18/Apr/2011 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | Virtex®-E EM |
| LAB/CLB數(shù)： | 2400 |
| 邏輯元件/單元數(shù)： | 10800 |
| RAM 位總計(jì)： | 573440 |
| 輸入/輸出數(shù)： | 404 |
| 門(mén)數(shù)： | 129600 |
| 電源電壓： | 1.71 V ~ 1.89 V |
| 安裝類型： | 表面貼裝 |
| 工作溫度： | -40°C ~ 100°C |
| 封裝/外殼： | 676-BGA |
| 供應(yīng)商設(shè)備封裝： | 676-FBGA（27x27） |
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Virtex-E 1.8 V Extended Memory Field Programmable Gate Arrays
Module 2 of 4
DS025-2 (v3.0) March 21, 2014
26
R
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
Port Signals
Each block SelectRAM+ port operates independently of the
others while accessing the same set of 4096 memory cells.
Table 15 describes the depth and width aspect ratios for the
block SelectRAM+ memory.
Clock—CLK[A|B]
Each port is fully synchronous with independent clock pins.
All port input pins have setup time referenced to the port
CLK pin. The data output bus has a clock-to-out time refer-
enced to the CLK pin.
Enable—EN[A|B]
The enable pin affects the read, write and reset functionality
of the port. Ports with an inactive enable pin keep the output
pins in the previous state and do not write data to the mem-
ory cells.
Write Enable—WE[A|B]
Activating the write enable pin allows the port to write to the
memory cells. When active, the contents of the data input
bus are written to the RAM at the address pointed to by the
address bus, and the new data also reflects on the data out
bus. When inactive, a read operation occurs and the con-
tents of the memory cells referenced by the address bus
reflect on the data out bus.
Reset—RST[A|B]
The reset pin forces the data output bus latches to zero syn-
chronously. This does not affect the memory cells of the
RAM and does not disturb a write operation on the other
port.
Address Bus—ADDR[A|B]<#:0>
The address bus selects the memory cells for read or write.
The width of the port determines the required width of this
bus as shown in Table 15.
Data In Bus—DI[A|B]<#:0>
The data in bus provides the new data value to be written
into the RAM. This bus and the port have the same width, as
shown in Table 15.
Data Output Bus—DO[A|B]<#:0>
The data out bus reflects the contents of the memory cells
referenced by the address bus at the last active clock edge.
During a write operation, the data out bus reflects the data
in bus. The width of this bus equals the width of the port.
The allowed widths appear in Table 15.
Inverting Control Pins
The four control pins (CLK, EN, WE and RST) for each port
have independent inversion control as a configuration option.
Address Mapping
Each port accesses the same set of 4096 memory cells
using an addressing scheme dependent on the width of the
port. The physical RAM location addressed for a particular
width are described in the following formula (of interest only
when the two ports use different aspect ratios).
Start = ((ADDRport +1) * Widthport) –1
End = ADDRport * Widthport
Table 16 shows low order address mapping for each port
width.
Creating Larger RAM Structures
The block SelectRAM+ columns have specialized routing to
allow cascading blocks together with minimal routing
delays. This achieves wider or deeper RAM structures with
a smaller timing penalty than when using normal routing
channels.
Location Constraints
Block SelectRAM+ instances can have LOC properties
attached to them to constrain the placement. The block
SelectRAM+ placement locations are separate from the
CLB location naming convention, allowing the LOC proper-
ties to transfer easily from array to array.
The LOC properties use the following form.
LOC = RAMB4_R#C#
RAMB4_R0C0 is the upper left RAMB4 location on the
device.
Table 15:
Block SelectRAM+ Port Aspect Ratios
Width
Depth
ADDR Bus
Data Bus
1
4096
ADDR<11:0>
DATA<0>
2
2048
ADDR<10:0>
DATA<1:0>
4
1024
ADDR<9:0>
DATA<3:0>
8
512
ADDR<8:0>
DATA<7:0>
16
256
ADDR<7:0>
DATA<15:0>
Table 16:
Port Address Mapping
Port
Width
Port
Addresses
1
4095...
1
5
1
4
1
3
1
2
1
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
2
2047...
07
06
05
04
03
02
01
00
4
1023...
03
02
01
00
8
511...
01
00
16
255...
00
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XCV405E-6FG900C | 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 |
| XCV405E-6FG900I | 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 |
| XCV405E-7BG404C | 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 |
| XCV405E-7BG404I | 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 |
| XCV405E-7BG556C | 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 |
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