DS2015芯片解密——橙盒独家解密技术服务

　　DALLAS芯片解密技术手法成熟可靠、多次成功为需求客户提供DALLAS系列单片机破解项目，成功为客户找回丢失的重要资料与程序，备受客户喜爱。最近，橙盒科技解密工程师又取得一重大DALLAS芯片解密技术突破--DS2015全线解密。
　　下面提供关于DS2015芯片的主要特性介绍，供广大客户及其他解密工作者参考，欢迎需求DS2015解密客户直接与橙盒科技联系。
　　FUNCTIONAL DESCRIPTION
　　The DS2105 consists of a bandgap reference, buffer amplifier, and nine termination resistors (Figure 1).  The bandgap reference circuit produces a precise 2.55V  level which is fed to a buffer amplifier.   The buffer pro-duces a 2.85V level and is capable of sourcing at least 24 mA into each of the termination resistors when the signal line is low (active).  When the driver for a given signal line turns off, the terminator will pull the signal line to 2.85V (quiescent state).  To handle actively negated SCSI signals, the buffer can sink 200 mA, and VREF will move less than 60 mV. When all lines settle in the quies- cent state, the regulator will consume about 5 mA.
　　When the DS2105 is put into power-down mode by bringing PD low, the power-down circuitry will turn off the transistors on each signal line.  This will isolate the DS2105 from the signal lines and effectively remove it from the circuit.  The power-down pin (PD) has an inter- nal 50K? pull-up resistor.  To place the DS2105 into an active state, the PD pin should be left open circuited.
　　To ensure proper operation, both the TERMPWR1 and TERMPWR2 pins must be connected to the SCSI bus TERMPWR line and both the VREF1 and VREF2 pins must be tied together externally.  Each DS2105 requires a 4.7 ?F capacitor connected between the VREF pins and ground.  Figure 2 details a typical SCSI bus configu-ration.  In an 8-bit wide SCSI bus arrangement (“A” Cable), two DS2105’s would be needed at each end of the SCSI cable in order to terminate the 18 active signal lines.  In a 16-bit wide SCSI bus arrangement (“P” Cable), three DS2105’s would be needed at each end of the SCSI cable in order to terminate the 27 active signal lines.
　　专业服务、成熟独家解密技术、优惠价格--橙盒科技本着“为客户提供最具竞争的产品技术服务”宗旨，欢迎需求DS2015芯片解密等DALLAS系列单片机破解客户与我们联系。
　　橙盒单片机解密咨询电话：0755-82173891,82173585
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