xcr3128xl解密

    关于Xilinx：
    Xilinx研发、制造并销售范围广泛的高级集成电路、软件设计工具以及作为预定义系统级功能的IP（Intellectual Property）核。客户使用Xilinx及其合作伙伴的自动化软件工具和IP核对器件进行编程，从而完成特定的逻辑操作。   

    Xilinx公司成立于 1984年，Xilinx首创了现场可编程逻辑阵列（FPGA）这一创新性的技术，并于1985年首次推出商业化产品。Xilinx产品已经被广泛应用于从无线电话基站到DVD播放机的数字电子应用技术中。
    关于xcr3128xl CPLD芯片功能特征介绍：
    The CoolRunner? XPLA3 XCR3128XL device is a 3.3V 128 macrocell CPLD targeted at power sensitive designs that require leading edge programmable logic solutions. A total of eight function blocks provide 3,000 usable gates.Pin-to-pin propagation delays are as fast as 5.5 ns with a maximum system frequency of 175 MHz.
　　xcr3128xl Features：
　　Low power 3.3V 128 macrocell CPLD
　　5.5 ns pin-to-pin logic delays
　　System frequencies up to 175 MHz
　　128 macrocells with 3,000 usable gates
　　Available in small footprint packages
　　- 144-pin TQFP (108 user I/O pins)
　　- 144-ball CS BGA (108 user I/O)
　　- 100-pin VQFP (84 user I/O)
　　Optimized for 3.3V systems
　　- Ultra low power operation
　　- Typical Standby Current of 17 μA at 25° C
　　- 5V tolerant I/O pins with 3.3V core supply
　　- Advanced 0.35 micron five layer metal EEPROM
　　process
　　- Fast Zero Power? (FZP) CMOS design
　　technology
　　- 3.3V PCI electrical specification compatible outputs
　　(no internal clamp diode on any input or I/O)
　　Advanced system features
　　- In-system programming
　　- Input registers
　　- Predictable timing model
　　- Up to 23 available clocks per function block
　　- Excellent pin retention during design changes
　　- Full IEEE Standard 1149.1 boundary-scan (JTAG)
　　- Four global clocks
　　- Eight product term control terms per function block
　　Fast ISP programming times
　　Port Enable pin for additional I/O
　　2.7V to 3.6V supply voltage at industrial temperature
　　range
　　Programmable slew rate control per output
　　Security bit prevents unauthorized access