User manual VIA KT880 BROCHURE

[. . . ] Conclusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Tables Table 1: Pico-ITX Mainboard Feature & Benefit Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 2: Mainboard Dimensions Comparison Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 5 Figure 2: 12-pin Pico-ITX Power Supply Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 3: VIA VT6047 Pico-ITX Mainboard Reference Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 4: VIA VT6047 Pico-ITX Mainboard PCB Layout: Top. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 5: VIA VT6047 Pico-ITX Mainboard PCB Layout: Underside . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 6: VIA VT6047 Pico-ITX Mainboard Mechanical Specifications. . . . . . . . . . . . . . . . . . . . . . . 12 Figure 7: VIA Technology Leadership in Mainboard Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Copyright © VIA Technologies, Inc, 2007. The names of actual companies and products may be the trademarks of their respective owners. Introduction This document defines Pico-ITX, the IT industry's smallest mainboard form factor specification, developed by VIA Technologies, Inc. as part of its "Small is Beautiful" strategy of shrinking the x86 platform in order to inspire innovative system design and to make x86 accessible for a new generation of smaller computing and connecting devices. In addition to describing the main features and applications for Pico-ITX form factor mainboards, this document also includes information about the VIA VT6047 Pico-ITX mainboard reference design, a working version of the board with suggested components and layout. 2. Pico-ITX Mainboard Form Factor Overview 2. 1 Pico-ITX Mainboard Form Factor Features and Benefits The new Pico-ITX mainboard form factor provides system developers and OEMs with a standardized, ultra compact yet highly integrated platform that can be utilized across multiple embedded PC, system and appliance designs. From car PCs embedded within dashboards and in-flight entertainment systems to industrial automation systems and even ultra portable devices, the Pico-ITX can enable the design of full x86 computing devices in previously impractical locations and applications. Measuring just 10cm x 7. 2cm, the Pico-ITX is currently the smallest complete x86 mainboard in the industry, smaller than all existing ATX, BTX and ITX form factors. It is the latest advance in mainboard design, and the third generation of platform size reduction from VIA: VIA Form Factor Mini-ITX Nano-ITX Pico-ITX Dimensions 17cm x 17cm 12cm x 12cm 10cm x 7. 2cm Announced November 2001 March 2004 April 2007 Remarkably, a board area reduction of exactly 50% has occurred at each stage of miniaturization, and the overall reduction in size over this period, between the MiniITX and the Pico-ITX is greater than 75%. The typical physical dimensions (see Table 3 below) are very compact compared to other standard power supplies such as ATX. The options of AC 100 ­ 240V and 50 ­ 60Hz auto switching are fully supported. The onboard VIA processor in the nanoBGA2 package leverages its small die size and highly efficient CoolStream architectural design to deliver power consumption to below one watt when running in optimized low voltage mode. Copyright © VIA Technologies, Inc, 2007. The names of actual companies and products may be the trademarks of their respective owners. . 6 VIA Pico-ITX Form Factor Small is Beautiful 2. 6 Pico-ITX Power Supply Connector The Pico-ITX power specification uses an industry standard 12-pin main connector to the power supply as shown in Figure 2. Figure 2: 12-pin Pico-ITX Power Supply Connector Power Cable Pin 6 Pin 1 2 3 4 5 6 7 8 9 10 11 12 PSU Connector +3. 3V +5V_SB +12V +5V +5V PWR_GD +3. 3V +3. 3V GND PWR_ONGND GND Pin 12 Pin 1 Pin 12 Pin 7 Pin 7 Pin 6 Power Connector Pin 1 Table 3: Pico-ITX Switching Power Supply DC Output Output Voltage Load Range Peak 3 Sec. Voltage Tolerance Ripple & Noise (p-p) 100mV 100mV 100mV 200mV Over Voltage Protection 5. 5V 3. 63V 5. 5V 13. 6V Min. 0. 5A 3. 5A 3. 5A 0. 8A 4. 0A 4. 5A 0. 5A ±5% ±5% ±5% ±5% +12V 0. 01A 0. 1A Total Power: Max 22W, Peak 25W Copyright © VIA Technologies, Inc, 2007. The names of actual companies and products may be the trademarks of their respective owners. VIA VT6047 Pico-ITX Mainboard Reference Design 3. 1 VIA VT6047 Pico-ITX Mainboard Reference Design Overview The VIA VT6047 Pico-ITX mainboard reference design provides developers with a standard platform for designing and building truly cost effective, ultra compact, scalable mainboards incorporating a myriad of features not previously possible using such a small form factor. With an onboard processor and all essential components, the VIA VT6047 Pico-ITX reference design is a complete system on motherboard. [. . . ] Figure 3: VIA VT6047 Pico-ITX Mainboard Reference Design The VIA VT6047 Pico-ITX mainboard reference design is ideal for embedded systems, since the embedded market demands much higher levels of energy efficiency and miniaturization than the PC industry, as well as greater product reliability and compatibility. Like its forerunners, the Mini- and Nano-ITX form factors, the VIA VT6047 provides a standardized, off-the shelf platform with full hardware compatibility to minimize development and testing time and to speed time to market. Copyright © VIA Technologies, Inc, 2007. The names of actual companies and products may be the trademarks of their respective owners. . 8 VIA Pico-ITX Form Factor Small is Beautiful 3. 2 VIA VT6047 Pico-ITX Mainboard Reference Design Specification The VIA VT6047 Pico-ITX mainboard reference design configuration specifies the combination of features as shown in Table 4 below. [. . . ]