The document discusses KVM switch technologies that allow multiple computers to be accessed from a single keyboard, mouse and monitor. It analyzes different types of KVM switches including analog and digital and recommends components like video buffers, amplifiers, switches and processors that can be used to build a KVM switch solution. Key aspects covered include types of KVM switches, applications, technologies, component selection guides and solutions.

1. Keyboard, Video And Mouse (KVM) Switch Solution

2. Introduction Purpose To discuss the basic technology of KVM switch and recommend one solution. Outline KVM switch basics Different types of KVM switch technologies Solution block diagram Core components selection guide Content 17 pages

3. KVM Switch Basics KVM switch is short for keyboard, video, mouse switch. KVM switch is enable to access multiple computers / servers from a single keyboard, video monitor, and mouse. KVM Switch Mail server Data Server PC Notebook

4. Why use KVM Switches? Hardware cost saving Physical space reduction Energy savings due to reduce the number of video monitor Improvement of administrative flexibility, efficiency, and productivity No software needed at the remote computer Security improving in data centers

5. Typical KVM Switch Applications Data center / Server room control application Network operation center Boardroom / Classroom application Test labs Industrial Control Center Digital signage application

6. Different KVM Switch Technologies Source from www.aten.com Analog KVM Digital KVM Real-Time Mouse & Video Responsiveness YES Maximum Video Quality Excellent Good Easier Scaling YES Unblocked Access for more simultaneous YES Able to Leverage Existing LAN infrastructure YES Places load on existing LAN bandwidth YES Network Independence YES Security of Access BEST GOOD Potentially less cabling in larger deployment YES Requires computer for gaining access NO YES

7. Solution for a KVM Switch

8. CAT-5 Video Line - Differential Drivers Manufacturer Part Number Channels Bandwidth (MHz) I OUT (mA) SR (V/μs) PSRR (dB) CMRR (dB) Gain AV (min) ADI AD8131 1 400 45 2000 50 50 2 ADI AD8133 3 450 90 1600 80 50 2 ADI AD8146 3 700 87 3000 54 50 2 ADI AD8148 3 700 87 3000 54 50 4 Intersil EL4543 3 350 60 1200 80 80 2 Intersil EL5170 1 100 85 1100 83 84 2 Intersil EL5171 1 250 90 800 84 82 1 Intersil EL5173 1 450 55 900 73 80 2 Intersil EL5174 1 550 60 1100 75 78 1 Intersil EL5176 1 250 40 800 84 82 1 Intersil EL5370 3 100 85 1100 83 84 2 Intersil EL5371 3 250 90 800 84 82 1 Intersil EL5373 3 450 55 1100 73 80 2 Intersil EL5374 3 550 60 1100 75 78 1 Intersil EL5378 3 700 60 1000 75 78 2 Intersil ISL59311 3 650 60 1500 75 75 2 National Semiconductor LMH6550 1 400 75 3000 90 80 Adj National Semiconductor LMH6551 1 370 65 2400 90 80 Adj National Semiconductor LMH6552 1 1000 80 3800 80 80 Adj National Semiconductor LMH6553 1 720 120 2300 87 80 Adj National Semiconductor LMH6554 1 2500 90 6200 70 80 Adj

9. ADI’s AD8131 High Speed Differential Driver KEY FEATURES Lowest-Cost 16x16 buffered switch array “ Non-blocking” switch matrix Supports “broadcast” mode 80MHz -3dB Bandwidth Fully Buffered- Gain=+2 Drives 75  coaxial cable directly ± 5 to ± 12V operation Handles a wide range of CM Voltages Switches composite, component video signals

10. CAT-5 Video Line - Differential Receivers Manufacturer Part Number Channels Bandwidth (MHz) I OUT (mA) SR (V/μs) PSRR (dB) CMRR (dB) Gain AV (min) ADI AD8129 1 200 35 1060 80 80 10 ADI AD8130 1 270 35 1090 80 80 1 ADI AD8143 3 260 40 1000 70 65 1 ADI AD8145 3 500 50 2100 70 69 1 Intersil ISL59910 3 150 60 1500 75 80 1 Intersil ISL59913 3 150 60 1500 75 80 1 Intersil EL5172 1 250 95 800 58 95 1 Intersil EL5175 1 550 67 600 56 95 1 Intersil EL5372 3 250 95 800 58 95 1 Intersil EL5375 3 550 67 900 56 95 1 Intersil EL9110 1 150 60 1500 60 60 1 Intersil EL9111 3 150 60 1500 65 80 1 Intersil EL9112 3 150 60 1500 65 80 1 Maxim MAX4444 1 400 90 5000 70 55 2 Maxim MAX4445 1 400 90 3800 70 55 2 National Semiconductor LMH6733 3 1000 80 3750 61 55 Adj National Semiconductor LMH6704 1 650 90 3000 52 50 1,2,-1 National Semiconductor LMH6734 3 925 70 3750 61 55 2

11. National’s LMH6733 Triple Operational Amplifier Supply range 3 to 12V single supply Supply range ±1.5V to ±6V split supply 1.0 GHz −3 dB small signal bandwidth (AV = +1, VS = ±5V) 650 MHz −3 dB small signal bandwidth (AV = +2, VS = 5V) Low supply current (5.5 mA per op amp, VS = 5V) 2.1 nV/ input noise voltage 3750 V/μs slew rate 70 mA linear output current CMIR and output swing to 1V from each supply rail

12. Video Crosspoint Switch Manufacturer Part Number Configuration Bandwidth (MHz) Control Interface Video Format Output Buffer Gain ADI AD8108 8 X 8 350 Serial/Parallel CVBS Yes 1 ADI AD8109 8 X 8 250 Serial/Parallel CVBS Yes 2 ADI AD8110 16 x 8 390 Serial/Parallel CVBS Yes 1 ADI AD8111 16 x 8 260 Serial/Parallel CVBS Yes 2 ADI AD8114 16 X 16 225 Serial/Parallel CVBS Yes 1 ADI AD8115 16 X 16 200 Serial/Parallel CVBS Yes 2 ADI AD8116 16 X 16 200 Serial CVBS Yes 1 Maxim MAX9675 16 x 16 110 Serial CVBS Yes 1 or 2 Maxim MAX4357 32 x 16 110 Serial CVBS Yes 1 or 2 Maxim MAX4356 16 x 16 110 Serial CVBS Yes 1 or 2 Maxim MAX4358 32 x 16 110 Serial CVBS Yes 1 or 2 Maxim MAX4359 4 x 4 35 Serial/Parallel CVBS No - Maxim MAX4360 8 x 4 35 Serial/Parallel CVBS No - Maxim MAX4456 8 x 8 35 Serial/Parallel CVBS No - National LMH6580 8x4 500 Serial CVBS Yes 1 or 2 National LMH6581 8x4 500 Serial CVBS Yes 1 or 2 National LMH6583 16x8 500 Serial CVBS Yes 1 or 2 National LMH6586 32x16 66 Serial CVBS Yes 1 or 2

13. National’s LMH6580 Analog Crosspoint Switch 8 inputs and 4 outputs − 3 dB bandwidth (VOUT = 2 VPP, RL = 1 kΩ) 500 MHz − 3 dB bandwidth (VOUT = 2 VPP, RL = 150Ω) 450 MHz Fast slew rate 2100 V/μs Channel to channel crosstalk (10/100 MHz) −70/ −52 dBc All hostile crosstalk (10/100 MHz) −55/−45 dBc Easy to use serial programming 4 wire bus Two programming modes Serial & addressed modes Symmetrical pinout facilitates expansion. Output current ± 70 mA Two gain options

14. Multimedia Processor Manufacturer Part Number Core Frequency (MHz) DMA Hardware Coprocessor Ethernet MAC ADI ADSP-BF561 Dual Blackfin cores 600 2 x 12 Channel Blackfin core Freescale IMX27 ARM926EJ-S 400 16 Channel MPEG-4/ H.263/H.264 HW encoder/decoder 10/100 TI TMS320DM6467 1 C64x+; 1 ARM9; DaVinci High Definition Video 594 64 Channel 2 HDVICPs 10/100/1000 TI TMS320DM6441 1 C64x+; 1 ARM9; DaVinci Video 405 64 Channel 1 VICP 10/100 TI TMS320DM365 1 ARM9, DaVinci Video 300 64 Channel 1 MJCP, 1HDVICP 10/100

15. Freescale’s iMX27 Performance • CPU complex: 400 MHz at 1.45 V, 266 MHz at 1.2 V • System: 133 MHz CPU Complex • ARM926EJ-S 400 MHz core • 16 KB L1 I-Cache and D-Cache • 16-channel DMA • ETM real-time debug • Smart Speed switch Multimedia • MPEG-4 H.263/H.264 D1 HW codec • Pre and post processing • High-speed CMOS sensor interface Connectivity • 10 and 100 Mbps Ethernet/IEEE® 802.3MAC • USB OTG high speed, host x 2 • 3 x MMC/SD, Memory Stick-Pro™ • PCMCIA/CF • ATA-6 (HDD) interface • Audio MUX • IrDA, keypad, 1-wire • Configurable SPI x 3, SSI/I2S x 2, UART x 6

16. Peripheral Solution Farnell Newark Video Buffer Click Click Video Amplifier Click Click Low Cost MCU Click Click RS485 Click Click Video ADC(High Speed) Click Click Video Switch Click Click Ethernet Transceiver Click Click

17. Additional Resource For ordering solution related products, please click the part list or Call our sales hotline For more design resources go to http://www.element-14.com/community/docs/DOC-18086 Visit Element 14 to post your question www.element-14.com For additional inquires contact our technical service hotline or even use our “Live Technical Chat” online facility Newark Farnell