| 摘要 |
PURPOSE: A backplane board of an SCSI(Small Computer System Interface) is provided to maximally install four disks, to support the function of an SAF-TE(SCSI Accessed Fault-Tolerant Enclosure), a wide ultra-3 LVD SCSI(Low Voltage Differential Small Computer System Interface), a wide ultra-2, and an ultra-SE(Single-Ended), to make a disk removable while power is turned on, and to realize hot-spare function. CONSTITUTION: A backplane board of an SCSI comprises an EPLD(Erasab1e Programmab1e Logic Device) logic unit to perform general control of an SCSI backplane board, SCSI ID(Identification) registration, disk ID selection, and device power control, an SAF-TE logic unit to perform 8-bit asynchronous SCSI data transmission, to provide a master/slave I2C bus, and to control the device slot state, power supply state, fan state, temperature state, and an SCSI bus motion mode, and a terminator logic unit to support SCSI 1, 2 and 3, a fast SCSI, and ultra 2 and 3, to provide active termination and multi-mode LVD/SE terminations, and to automatically select LVD or SE termination.
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