收藏本站
参数资料
型号： HW-SPAR3A-SK-UNI-G
厂商： Xilinx Inc
文件页数： 68/143页
文件大小： 0K
描述： KIT STARTER W/SPARTAN-3A
产品培训模块： FPGAs Spartan3
产品变化通告： Adapter Replacement 23/May/2008
标准包装： 1
系列： Spartan®-3A
类型： FPGA
适用于相关产品： Spartan?3A FPGA，XC3S700A-FG484
所含物品： 板，线缆，文档，电源
相关产品： XC3S700A-5FTG256C-ND - IC FPGA SPARTAN-3A 256K 256FTBGA
122-1722-ND - IC FPGA SPARTAN-3A 256K 256FTBGA
XC3S700A-4FTG256C-ND - IC FPGA SPARTAN-3A 256K 256FTBGA
XC3S700A-5FGG484C-ND - IC SPARTAN-3A FPGA 700K 484FBGA
XC3S700A-5FGG400C-ND - IC SPARTAN-3A FPGA 700K 400FBGA
XC3S700A-5FG484C-ND - IC SPARTAN-3A FPGA 700K 484FBGA
XC3S700A-5FG400C-ND - IC SPARTAN-3A FPGA 700K 400FBGA
XC3S700A-4FG484I-ND - IC SPARTAN-3A FPGA 700K 484FBGA
XC3S700A-4FG484C-ND - IC SPARTAN-3A FPGA 700K 484FBGA
XC3S700A-4FGG484I-ND - IC SPARTAN-3A FPGA 700K 484FBGA
更多...
其它名称： 122-1514
Chapter 8: PS/2 Mouse/Keyboard Port
R
Both a PC mouse and keyboard use the two-wire PS/2 serial bus to communicate with a
host device, the Spartan-3A FPGA in this case. The PS/2 bus includes both clock and data.
Both a mouse and keyboard drive the bus with identical signal timings, and both use 11-bit
words that include a start, a stop, and an odd parity bit. However, the data packets are
organized differently for a mouse and keyboard. Both the keyboard and mouse interfaces
allows bidirectional data transfers. For example, the FPGA host design can illuminate the
state LEDs on the keyboard or change the communicate rate with the mouse.
The PS/2 bus timing appears in Table 8-2 and Figure 8-2 . The clock and data signals are
only driven when data transfers occur; otherwise they are held in the idle state at a logic
High. The timing defines signal requirements for mouse-to-host communications and
bidirectional keyboard communications. As shown in Figure 8-2 , the attached keyboard or
mouse writes a bit on the data line when the clock signal is High, and the host reads the
data line when the clock signal is Low.
Table 8-2:
PS/2 Bus Timing
Symbol
T CK
T SU
T HLD
Parameter
Clock High or Low Time
Data-to-clock Setup Time
Clock-to-data Hold Time
Edge 0
T CK T CK
Min
30 μ s
5 μ s
5 μ s
Edge 10
Max
50 μ s
25 μ s
25 μ s
CLK (PS2C)
DATA (PS2D)
T SU
T HLD
'0' start bit
'1' stop bit
UG230_c8_02_021806
Figure 8-2: PS/2 Bus Timing Waveforms
Keyboard
The keyboard uses open-collector drivers so that either the device or the host can drive the
two-wire bus. If the host never sends data, then the host can use simple input pins.
A PS/2-style keyboard uses scan codes to communicate key-press data. Each key has a
single, unique scan code that is sent whenever the corresponding key is pressed. The scan
codes for most keys appear in Figure 8-3 .
If the key is pressed and held, the keyboard repeatedly sends the scan code every 100 ms or
so. When a key is released, the keyboard sends an “F0” key-up code, followed by the scan
code of the released key. The keyboard sends the same scan code, regardless if a key has
different shift and non-shift characters and regardless whether the Shift key is pressed or
not. The host determines which character is intended.
Some keys, called extended keys, send an “E0” ahead of the scan code, and furthermore,
they might send more than one scan code. When an extended key is released, an “E0 F0”
key-up code is sent, followed by the scan code.
68
www.xilinx.com
Spartan-3A FPGA Starter Kit Board User Guide
UG330 (v1.3) June 21, 2007
相关PDF资料
PDF描述
HW-SPAR3AN-SK-UNI-G KIT STARTER SPARTAN-3 AN
HW-V4-ML403-UNI-G-J EVALUATION PLATFORM VIRTEX-4
HW-V4-ML405-UNI-G-J EVALUATION PLATFORM VIRTEX-4
HW-V4-ML410-UNI-G-J EVALUATION PLATFORM VIRTEX-4
HW-V5-ML501-UNI-G EVALUATION PLATFORM VIRTEX-5
相关代理商/技术参数
参数描述
HW-SPAR3A-SK-UNI-G-J 功能描述:KIT STARTER W/SPARTAN-3A RoHS:是 类别:编程器，开发系统 >> 通用嵌入式开发板和套件（MCU、DSP、FPGA、CPLD等） 系列:Spartan®-3A 产品培训模块:Blackfin® Processor Core Architecture Overview Blackfin® Device Drivers Blackfin® Optimizations for Performance and Power Consumption Blackfin® System Services 特色产品:Blackfin? BF50x Series Processors 标准包装:1 系列:Blackfin® 类型:DSP 适用于相关产品:ADSP-BF548 所含物品:板，软件，4x4 键盘，光学拨轮，QVGA 触摸屏 LCD 和 40G 硬盘 配用:ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARDADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE 相关产品:ADSP-BF542BBCZ-4A-ND - IC DSP 16BIT 400MHZ 400CSBGAADSP-BF544MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF542KBCZ-6A-ND - IC DSP 16BIT 600MHZ 400CSBGAADSP-BF547MBBCZ-5M-ND - IC DSP 16BIT 533MHZ MDDR 400CBGAADSP-BF548BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF547BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF544BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGAADSP-BF542BBCZ-5A-ND - IC DSP 16BIT 533MHZ 400CSBGA
HW-SPAR3-CPLD-DK 功能描述:STARTER KIT BUNDLE SPARTAN3/CPLD RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
HW-SPAR3-CPLD-DK-J 功能描述:KIT HDWR FOR SPARTAN3/CPLD-JAPAN RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
HW-SPAR3E-DISP-DK-UNI-G 功能描述:KIT DEV SPARTAN3E DISPLAY RoHS:是 类别:编程器，开发系统 >> 过时/停产零件编号 系列:Spartan®-3E 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
HW-SPAR3E-DISP-DK-UNI-G-PROMO 功能描述:KIT DEV SPARTAN3E DISPLAY RoHS:是 类别:编程器，开发系统 >> 过时/停产零件编号 系列:Spartan®-3E 标准包装:1 系列:*
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*