IO96NDB2V1 datasheet(97/242 Pages) MICROSEMI

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ProASIC3L Low Power Flash FPGAs

Revision 13

2-81

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 2-12.

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

described in Table 2-127.

Timing Characteristics

1.5 V DC Core Voltage

Table 2-126 • Minimum and Maximum DC Input and Output Levels

3.3 V PCI/PCI-X

VIL

VIH

VOL

VOH IOL IOH

IOSL

IOSH

IIL IIH

Drive Strength

Min.

Max.

Min.

Max.

Min.

VmA mA

Max.

mA1

Max.

mA1

µA2 µA2

Per PCI specification

Per PCI curves

10 10

Notes:

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

2. Currents are measured at 85°C junction temperature.

Figure 2-12 • AC Loading

Test Point

Enable Path

R to VCCI for tLZ / tZL / tZLS

10 pF for tZH / tZHS / tZL / tZLS

10 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)

Table 2-127 • AC Waveforms, Measuring Points, and Capacitive Loads

Input Low (V)

Input High (V)

Measuring Point* (V)

CLOAD (pF)

3.3

0.285 * VCCI for tDP(R)

0.615 * VCCI for tDP(F)

Note: *Measuring point = Vtrip. See Table 2-27 on page 2-26 for a complete table of trip points.

Table 2-128 • 3.3 V PCI/PCI-X – Applies to 1.5 V DC Core Voltage

Commercial-Case Conditions: TJ = 70°C, Worst-Case VCC = 1.425 V, Worst-Case VCCI = 3.0 V

Applicable to Pro I/O Banks

Speed Grade

tDOUT

tDP

tDIN

tPY

tPYS tEOUT

tZL

tZH

tLZ

tHZ

tZLS

tZHS Units

Std.

0.59

2.52

0.04

2.47

3.33

0.38

2.57

1.80

2.95

3.25

4.58

3.81

–1

0.50

2.15

0.03

2.10

2.84

0.33

2.19

1.53

2.51

2.77

3.90

3.24

Note: For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-7 for derating values.

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