Asus PCI-DA2100 Bedienungsanleitung

US006173344B1 (12) United States Patent Mohammed et al. (10) Patent N0.: (45) Date of Patent: US 6,173,344 B1 Jan. 9, 2001 (54) SCSI BUS TRANSCEIVER A

US 6,173,344 B1 5 detrimentally affected When non-Ultra2 target devices are connected through the Ultra or Ultra Wide buses (i.e., having cable 102 an

US 6,173,344 B1 7 side of the isolating transceiver unit, the method Will pro ceed to an operation 512. In operation 512, the computer system is re-bo

US 6,173,344 B1 9 machine that is con?gured to produce a logical Zero When the ?rst transaction is occurring betWeen the host adapter and the loW volt

U.S. Patent Jan. 9, 2001 Sheet 1 0f 6 US 6,173,344 B1 100 f / / ./ / / / l , > 1 A ' 106 Target Target / 106 \ Device Device .00 (Ultra) (

U.S. Patent Jan. 9, 2001 Sheet 2 0f 6 US 6,173,344 B1 m .UE 52:2 voFoQ pumb?w H ¢NH NNH

U.S. Patent Jan. 9, 2001 Sheet 4 0f 6 US 6,173,344 B1 402 400 K U1tra2 Transaction Ultra Transaction Target Info. Signal SET = 1 Target Info. Signal H

U.S. Patent Jan. 9, 2001 Sheet 5 0f 6 US 6,173,344 B1 500 ‘ Start , / 502 V Boot-up Computer Including a Transceiver Unit that is Connected to an Ultr

U.S. Patent Jan. 9, 2001 Sheet 6 6f 6 US 6,173,344 B1 600 ( Target Device Bus Type Target Device ID# Type 1 Ultra2 Ultra 9'6 3 Ultra2 U1tra2 7 U

US 6,173,344 B1 1 SCSI BUS TRANSCEIVER AND METHOD FOR MAKING THE SAME BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates gen

US 6,173,344 B1 3 transceiver unit is con?gured to produce a target information signal that identi?es Whether a data transfer operation is being execu