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FPGA with a plurality of I/O voltage levels 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H03K-019/0948
출원번호 US-0837023 (1997-04-11)
발명자 / 주소
  • Goetting F. Erich
  • Frake Scott O.
  • Kondapalli Venu M.
  • Young Steven P.
출원인 / 주소
  • Xilinx, Inc.
대리인 / 주소
    Cartier
인용정보 피인용 횟수 : 34  인용 특허 : 9

초록

The invention comprises an FPGA having a plurality of input reference voltages and/or output voltage supplies. In one embodiment, two or more differential amplifiers in the same configurable input buffer use different input reference voltages. According to a second aspect of the invention, the I/O p

대표청구항

[ What is claimed is:] [1.] An Input/Output Block (IOB), comprising:an input reference voltage line;an input/output pad connected to a pad line;an input buffer having said pad line as an input, said input buffer comprising a differential amplifier, said differential amplifier having a reference inpu

이 특허에 인용된 특허 (9)

  1. Farhang Ali R. (Beaverton OR) Nogle Scott G. (Austin TX), Buffer circuit having variable output impedance.
  2. Assar Mahmud (Morgan Hill CA) Agarwal Prakash C. (San Jose CA) Bril Vlad (Campbell CA), CMOS low power mixed voltage bidirectional I/O buffer.
  3. Lee Napoleon W. ; Curd Derek R., Configurable performance-optimized programmable logic device.
  4. Yao Chingchi (Saratoga CA) Wang Poucheng (Mt. View CA), Efficient method and resulting structure for integrated circuits with flexible I/O interface and power supply voltages.
  5. Nakase Yasunobu,JPX, Input circuit.
  6. Dryer Stephen F. ; Hu Rong-Hui, Integrated circuit I/O node useable for configuration input at reset and normal output at other times.
  7. Iwamura Masahiro (Hitachi JPX) Maejima Hideo (Hitachi JPX) Masuda Ikuro (Hitachi JPX), Logic circuit and semiconductor integrated circuit device capable of operating by different power supplies.
  8. Becker Steffen (Zorneding DEX) Schmitt-Landsiedel Doris (Ottobrunn DEX) Keitel-Schulz Doris (Munich DEX), Programmable logic array having programmable output driver drive capacity.
  9. Hsieh Hung-Cheng (Sunnyvale CA), TTL/CMOS compatible input buffer with Schmitt trigger.

이 특허를 인용한 특허 (34)

  1. Kao,Oliver C., Apparatus and method for implementing an analog-to-digital converter in programmable logic devices.
  2. Ralph T. Luna ; Lloyd F. Linder ; Erick M. Hirata, Apparatus for translating digital signals.
  3. Lesea, Austin H.; Ghia, Atul V., Asymmetric bidirectional bus implemented using an I/O device with a digitally controlled impedance.
  4. Rahman, Arifur; Andrews, William; Lin, Mou C., Bank-based input/output buffers with multiple reference voltages.
  5. Alexander, Mark A.; Lesea, Austin H., Bi-directional interface and communication link.
  6. Shekhar Bapat ; Lawrence C. Hung, Deskewing clock signals for off-chip devices.
  7. Lesea,Austin H.; Wu,Yiding, Duty cycle characterization and adjustment.
  8. Sewani, Aman; Upadhyaya, Parag, Input/output circuits and methods of implementing an input/output circuit.
  9. Lee, Jung-bae, Memory module capable of improving the integrity of signals transmitted through a data bus and a command/address bus, and a memory system including the same.
  10. Anderson, Jason H.; Saunders, James L.; Chari, Madabhushi V. R.; Nag, Sudip K.; Jayaraman, Rajeev, Method and apparatus for placement of input-output design objects into a programmable gate array.
  11. Bhattacharya,Subhrajit; Darringer,John; Ostapko,Daniel L., Method for using partitioned masks to build a chip.
  12. William B. Andrews ; Harold N. Scholz, Multi-functional I/O buffers in a field programmable gate array (FPGA).
  13. Wang, Xiaobao; Sung, Chiakang; Nguyen, Khai; Huang, Joseph; Wang, Bonnie; Pan, Philip; Chong, Yan; Kim, In Whan; Rangan, Gopinath; Chang, Tzung-Chin, On/off reference voltage switch for multiple I/O standards.
  14. Clark, Lawrence T.; Mozdzen, Thomas J., Output buffer for high and low voltage bus.
  15. Philip Alan Jeffery ; Shilpa Rao, Pin programmable reference.
  16. Anderson Jason H. ; Saunders James L. ; Chari Madabhushi V. R. ; Nag Sudip K. ; Jayaraman Rajeev, Placement of input-output design objects into a programmable gate array supporting multiple voltage standards.
  17. Masleid, Robert Paul, Power efficient multiplexer.
  18. Masleid, Robert Paul, Power efficient multiplexer.
  19. Masleid, Robert Paul, Power efficient multiplexer.
  20. Masleid, Robert Paul, Power efficient multiplexer.
  21. Wang, Bonnie I.; Sung, Chiakang; Huang, Joseph; Nguyen, Khai Q.; Pan, Philip Y., Programmable high-speed I/O interface.
  22. Wang, Bonnie I.; Sung, Chiakang; Huang, Joseph; Nguyen, Khai Q.; Pan, Philip Y., Programmable high-speed I/O interface.
  23. Wang, Bonnie I.; Sung, Chiakang; Huang, Joseph; Nguyen, Khai; Pan, Philip, Programmable high-speed interface.
  24. Menon Suresh Manohar ; Bobra Yogendra Kumar ; Ghia Atul V. ; Zaliznyak Arch, Programmable input/output circuit for FPGA for use in TTL, GTL, GTLP, LVPECL and LVDS circuits.
  25. Kerry Veenstra ; Krishna Rangasayee ; John E. Turner, Programmable logic device input/output architecture with power bus segmentation for multiple I/O standards.
  26. Wayne Yeung ; Chiakang Sung ; Myron W. Wong ; Khai Nguyen ; Bonnie I. Wang ; Xiaobao Wang ; Joseph Huang ; Im Whan Kim, Programmable logic device input/output circuit configurable as reference voltage input circuit.
  27. Wayne Yeung ; Chiakang Sung ; Myron W. Wong ; Khai Nguyen ; Bonnie I. Wang ; Xiaobao Wang ; Joseph Huang ; In Whan Kim, Programmable logic device input/output circuit configurable as reference voltage input circuit.
  28. El-Ayat, Khaled A., Programmable multi-standard I/O architecture for FPGAS.
  29. Austin H. Lesea, Realizing analog-to-digital converter on a digital programmable integrated circuit.
  30. Lesea Austin H., Realizing analog-to-digital converter on a digital programmable integrated circuit.
  31. Agrawal,Om P.; Nguyen,Bai; Chi,Kuang; Sharpe Geisler,Brad; Tran,Giap, Scalable serializer-deserializer architecture and programmable interface.
  32. Verma,Himanshu J.; Oh,Kwansuhk, Signal adjustment for duty cycle control.
  33. Cical, Ionut C.; Cullen, Edward; Bogue, Ivan, System and method of eliminating on-board calibration resistor for on-die termination.
  34. Bhattacharya, Subhrajit; Darringer, John; Ostapko, Daniel L., System for using partitioned masks to build a chip.
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