| 모델 P/N | 시리즈 | 실험실/CLBS 수 | 속도 등급 | 논리 요소/셀 수 | 총 램 비트 | I/O 수 | 전압 - 공급 | 마운팅 유형 | 작동 온도 | 패키지 / 케이스 | 공급업체 디바이스 패키지 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| XC4VLX25-11FFG668C | Virtex-4 SX | 2.688,00 | -11,00 | 24192 논리 요소 | 1,327,104비트 | 448 | 1.14V ~ 1.26V | 표면 실장 | 상업용(0°C ~ +85°C) | 668-BBGA, FCBGA | 668-FCBGA(27×27) |
XC4VLX25-11FFG668C: High-Speed Virtex-4 LX Logic Platform
그리고 XC4VLX25-11FFG668C is a high-performance FPGA within the Virtex-4 LX family, optimized for logic-heavy applications that demand tighter timing margins. Utilizing the 90nm process, the LX series focuses on maximizing logic-to-feature ratios, making it the preferred choice for high-speed I/O interfacing, frame buffering, and complex state machine implementations.
As a -11 속도 등급 device, this variant offers a performance boost over the standard -10, providing the necessary slack for designs running at higher clock frequencies or those with complex routing paths that are sensitive to propagation delays.
Core Technical Parameters
-
로직 셀: 24,192
-
최대 클럭 관리 타일(CMT): 8 (Incorporating DCMs and PMCDs)
-
RAM을 차단합니다: 1,296 Kb
-
DSP48 슬라이스: 48
-
최대 사용자 I/O: 448
-
패키지: FFG668 (Fine-pitch Flip-Chip BGA, Pb-Free)
-
속도 등급: -11(고성능)
-
온도 등급: Commercial ($0°C$ 에 $+85°C$)
Engineering Implementation & Design Notes
When integrating the XC4VLX25-11FFG668C into an existing system or a new legacy-support design, keep these hardware-level factors in mind:
-
타이밍 종료: The -11 speed grade is approximately 10-15% faster than the -10. While this aids in meeting setup times ($T_{su}$), engineers should perform a secondary static timing analysis (STA) to ensure that hold time ($T_h$) violations haven’t been introduced in short paths due to the faster silicon.
-
Configuration Requirements: This device requires a 1.2V $V_{CCINT}$ supply. Ensure your power distribution network (PDN) is decoupled correctly with low-ESR capacitors near the FFG668 footprint to manage the transient currents typical of high-speed switching in the Virtex-4 architecture.
-
ISE Design Suite: Note that the Virtex-4 family is not supported by Vivado. You must use 자일링스 ISE 14.7. If you are pulling an archived project, ensure your constraints file (.UCF) is mapped correctly to the 668-pinout to avoid I/O bank voltage conflicts.
Why Sourcing the -11 Grade Matters
In many medical and defense systems, the XC4VLX25-11FFG668C was specified because the design would not “lock” at the -10 speed grade. Replacing a -11 with a -10 can lead to intermittent system crashes or bit errors. We prioritize providing the exact speed grade specified in your original netlist to maintain system integrity.
하드웨어 엔지니어를 위한 FAQ
Can I use a -12 speed grade instead of this -11? Technically, yes. Xilinx speed grades are backward compatible; a faster part (-12) can always do the job of a slower part (-11), provided the thermal envelope remains within limits. However, the -11 is usually the “sweet spot” for cost vs. performance in maintenance cycles.
Does the FFG668 package require specialized soldering? The “FFG” signifies a Lead-Free Flip-Chip BGA. It requires a standard RoHS reflow profile. Because the die is mounted directly to the substrate (Flip-Chip), the package has excellent heat dissipation through the top of the chip, but it is sensitive to uneven mechanical pressure from heatsinks.
How do I handle the EOL (End of Life) status of this part? The Virtex-4 is a mature product. When sourcing, we recommend requesting the specific Date Code (D/C) and ensuring the parts have been stored in MSL-compliant (Moisture Sensitivity Level) packaging to prevent popcorn effects during reflow.
LXB 세미콘에 문의 에서 가용성, 가격 및 기술 지원을 확인하세요.
