来源：芯片解密-龙芯世纪 时间：2010-06-11 阅读：1083次
CY22394F 芯片解密是龙芯世纪在 研究中成功破解的典型芯片型号，针对该芯片，我们解密周 期短、价格低、可靠性强。这里，我们将针对CY22394F芯片的主要技术特征做简单介绍，这里我们仅提供对CY22394F芯片的主要 功能特征介绍，供客户及各类芯片解密工程师与电子工程师参考借鉴，有芯片解密,ic解密 需求者请直接与我们联系咨询。
The CY22393, CY22394, and CY22395 are a family of parts designed as upgrades to the existing CY22392 device. These parts have similar performance to the CY22392, but provide advanced features to meet the needs of more demanding applications.
The clock family has three PLLs which, when combined with the reference, allow up to four independent frequencies to be output on up to six pins. These three PLLs are completely programmable.
Three integrated phase-locked loops (PLLs)
Ultra-wide divide counters (8-bit Q, 11-bit P, and 7-bit post divide)
Improved linear crystal load capacitors
Flash programmability with external programmer
Low-jitter, high-accuracy outputs
Power-management options (Shutdown, OE, Suspend)
Configurable crystal drive strength
Frequency select via three external LVTTL inputs
16-pin TSSOP package
Generates up to three unique frequencies on up to six outputs from an external source.
Allows for 0-ppm frequency generation and frequency conversion in the most demanding applications.
Improves frequency accuracy over temperature, age,process, and initial ppm offset.
Non-volatile programming enables easy customization, ultra-fast turnaround, performance tweaking, design timing margin testing, inventory control, lower part count, and more secure product supply. In addition, any part in the family can be programmed multiple times, which reduces programming errors and provides an easy upgrade path for existing designs.
In-house programming of samples and prototype quantities are available using the CY3672 FTG Development Kit.Production quantities are available through Cypress Semiconductor抯 value-added distribution partners or by using third-party programmers from BP Microsystems, HiLo Systems, and others.
Performance suitable for high-end multimedia, communications, industrial, A/D converters, and consumer applications.
Supports numerous low-power application schemes and reduces electromagnetic interference (EMI) by allowing unused outputs to be turned off.
Adjust crystal drive strength for compatibility with virtually all crystals.
3-bit external frequency select options for PLL1, CLKA, and CLKB.
Industry-standard supply voltage.
Industry-standard packaging saves on board space.
Easy to use software support for design entry.
Allows in-system programming into volatile configuration memory. All frequency settings can be changed providing literally millions of frequency options.
Adjust output buffer strength to lower EMI or improve timing margin.
Fine tune crystal oscillator frequency by changing load capacitance.
Differential output up to 400 MHz.
Provides interfacing option for low-voltage parts.