参数资料
型号: XCS20-3PQ208C
厂商: Xilinx Inc
文件页数: 11/83页
文件大小: 0K
描述: IC FPGA 5V C-TEMP 208-PQFP
产品变化通告: Spartan,Virtex FPGA/SCD Discontinuation 18/Oct/2010
标准包装: 24
系列: Spartan®
LAB/CLB数: 400
逻辑元件/单元数: 950
RAM 位总计: 12800
输入/输出数: 160
门数: 20000
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
工作温度: 0°C ~ 85°C
封装/外壳: 208-BFQFP
供应商设备封装: 208-PQFP(28x28)
Spartan and Spartan-XL FPGA Families Data Sheet
DS060 (v2.0) March 1, 2013
19
Product Specification
R
Product Obsolete/Under Obsolescence
3-State Long Line Drivers
A pair of 3-state buffers is associated with each CLB in the
array. These 3-state buffers (BUFT) can be used to drive
signals onto the nearest horizontal longlines above and
below the CLB. They can therefore be used to implement
multiplexed or bidirectional buses on the horizontal long-
lines, saving logic resources.
There is a weak keeper at each end of these two horizontal
longlines. This circuit prevents undefined floating levels.
However, it is overridden by any driver.
The buffer enable is an active High 3-state (i.e., an active
Low enable), as shown in Table 11.
Three-State Buffer Example
Figure 18 shows how to use the 3-state buffers to imple-
ment a multiplexer. The selection is accomplished by the
buffer 3-state signal.
Pay particular attention to the polarity of the T pin when
using these buffers in a design. Active High 3-state (T) is
identical to an active Low output enable, as shown in
Figure 17: Detail of Spartan/XL Dedicated Carry Logic
01
M
0
1
01
M
0
1
M
0
3
M
1
M
I
G1
G4
F2
F1
F3
COUT
COUT0
G2
G3
F4
CIN
DS060_17_080400
TO
FUNCTION
GENERATORS
M
Table 11: Three-State Buffer Functionality
IN
T
OUT
X1
Z
IN
0
IN
Figure 18: 3-state Buffers Implement a Multiplexer
DN
DC
DB
DA
ABC
N
Z = (DA A) + (DB B) + (DC C) + (DN N)
~100 k
Ω
"Weak Keeper"
DS060_18_080400
BUFT
相关PDF资料
PDF描述
XCS10XL-5VQ100C IC FPGA 3.3V C-TEMP 100-VQFP
XCS10XL-5TQ144C IC FPGA 3.3V C-TEMP 144-TQFP
IDT7015S15J IC SRAM 72KBIT 15NS 68PLCC
FMM43DSEH-S243 CONN EDGECARD 86POS .156 EYELET
IDT71V67803S166BG IC SRAM 9MBIT 166MHZ 119BGA
相关代理商/技术参数
参数描述
XCS203PQ208C0600 制造商:Xilinx 功能描述:
XCS20-3PQ208I 功能描述:IC FPGA 5V I-TEMP 208-PQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - FPGA(现场可编程门阵列) 系列:Spartan® 标准包装:1 系列:Kintex-7 LAB/CLB数:25475 逻辑元件/单元数:326080 RAM 位总计:16404480 输入/输出数:350 门数:- 电源电压:0.97 V ~ 1.03 V 安装类型:表面贴装 工作温度:0°C ~ 85°C 封装/外壳:900-BBGA,FCBGA 供应商设备封装:900-FCBGA(31x31) 其它名称:122-1789
XCS20-3PQ240C 制造商:XILINX 制造商全称:XILINX 功能描述:Spartan and Spartan-XL Families Field Programmable Gate Arrays
XCS20-3PQ240I 制造商:XILINX 制造商全称:XILINX 功能描述:Spartan and Spartan-XL FPGA
XCS20-3PQ256C 制造商:XILINX 制造商全称:XILINX 功能描述:Spartan and Spartan-XL Families Field Programmable Gate Arrays