Отправлено Slavko 09 августа 2002 г. 10:18 В ответ на: Внимательно посмотри http://www.xilinx.com/partinfo/ds001_2.pdf там всё есть отправлено Elresearch 08 августа 2002 г. 18:10

The Low-Voltage TTL (LVTTL) standard is a general purpose
EIA/JESDSA standard for 3.3V applications that uses
an LVTTL input buffer and a Push-Pull output buffer. This
standard requires a 3.3V output source voltage (VCCO), but
does not require the use of a reference voltage (VREF) or a
termination voltage (VTT).
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The Peripheral Component Interface (PCI) standard specifies
support for both 33 MHz and 66 MHz PCI bus applications.
It uses a LVTTL input buffer and a push-pull output
buffer. This standard does not require the use of a reference
voltage (VREF) or a board termination voltage (VTT), however,
it does require a 3.3V output source voltage (VCCO).
I/Os configured for the PCI, 33 MHz, 5V standard are also
5V-tolerant.

• см Table 29 и Table 30, а т.ж. Switching Characteristics и Delay Adjustments в http://www.xilinx.com/partinfo/ds001_3.pdf — Elresearch   (09.08.2002 11:35, пустое)