VMV3 datasheet(87/212 Pages) MICROSEMI

87 / 212 page

Military ProASIC3/EL Low Power Flash FPGAs

Revision 3

2-73

3.3 V PCI, 3.3 V PCI-X

Peripheral Component Interface for 3.3 V standard specifies support for 33 MHz and 66 MHz PCI Bus

applications.

AC loadings are defined per the PCI/PCI-X specifications for the database; Microsemi loadings for

enable path characterization are described in Figure 2-15.

AC loadings are defined per PCI/PCI-X specifications for the datapath; Microsemi loading for tristate is

described in Table 2-114.

Table 2-113 • Minimum and Maximum DC Input and Output Levels

3.3 V PCI/PCI-X

VIL

VIH

VOL

VOH IOL IOH

IOSL

IOSH

IIL1 IIH2

Drive Strength

Min.

Max.

Min.

Max.

Min.

VmA mA

Max.

mA3

Max.

mA3

µA4 µA4

Per PCI specification

Per PCI curves

15 15

Notes:

1. IIL is the input leakage current per I/O pin over recommended operation conditions where –0.3 V < VIN < VIL.

2. IIH is the input leakage current per I/O pin over recommended operating conditions VIH < VIN < VCCI. Input current is

larger when operating outside recommended ranges

3. Currents are measured at 100°C junction temperature and maximum voltage.

4. Currents are measured at 125°C junction temperature.

Figure 2-15 • AC Loading

Test Point

Enable Path

R to VCCI for tLZ / tZL / tZLS

10 pF for tZH / tZHS / tZL / tZLS

5 pF for tHZ / tLZ

R to GND for tHZ / tZH / tZHS

R = 1 k

Test Point

Datapath

R = 25

R to VCCI for tDP (F)

R to GND for tDP (R)

10 pF

Table 2-114 • AC Waveforms, Measuring Points, and Capacitive Loads

Input Low (V)

Input High (V)

Measuring Point* (V)

VREF (Typ) (V)

CLOAD (pF)

3.3

0.285 * VCCI for tDP(R)

0.615 * VCCI for tDP(F)

Note:

*Measuring point = Vtrip. See Table 2-28 on page 2-27 for a complete table of trip points.

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