Aaeon SBC-551 Manual

Aaeon SBC-551 Manual Manual pdf 10 page image

2 SBC-551/552 User ManualIntroductionThe SBC-551/552 is an all-in-one Single Board Computer (SBC)capable of handling the Intel Pentium P54C, P55C (MMX), AMDK6, as well as the Cyrix 6x86 (M1) and 6x86MX (M2) CPUs.Reliability, performance, flexibility, and adequate expansioncapabilities are essential qualities for SBCs and their embeddedapplications and the SBC-551/552 provides all of these.The Smart Temperature Control technology (LM75 chip) monitorsthe CPU temperature and automatically slows down the CPUfrequency when the CPU temperature exceeds a specified saferange, helping your system recover from abnormal temperaturefluctuations.The SBC-551/552 supports the M-Systems DiskOnChip 2000(optional) which is a new generation of high performance single-chip Flash Disk. It provides a Flash Disk (as a BIOS expansion)which doesn't require any bus, slots, or connectors. It is also theoptimal solution for Single Board Computers because of its smallsize, easy integration, plug-and-play functionality, and its lowpower consumption. The DiskOnChip is available in capacitiesfrom 2MB to 72MB and fits in a standard 32-pin DIP socket.The SBC-551/552 also includes a high speed, local bus IDEcontroller which supports (through ATA PIO) mode 3 and mode 4hard disks, Ultra DMA/33 (data transfer rates up to 33MB/sec) andup to 2 IDE devices.Onboard features include one high speed RS-232 serial port, oneRS-232/422/485 serial port with 16C550 UARTs, one bidirectionalSPP/EPP/ECP parallel port, and a floppy drive controller. Inaddition to the 486's 16 KB of onchip cache memory, the SBC-551/552 includes an extra 512 KB of pipeline-burst L2 cache memery.If program execution is halted by a program bug or EMI, the board'swatchdog timer can automatically reset the CPU or generate aninterrupt. This ensures reliability in unmanned or standalonesystems.