AX2000-1CS896 datasheet(54/226 Pages) ACTEL

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Axcelerator Family FPGAs

2- 40

v2.7

Timing Characteristics

Table 2-56 • AC Waveforms, Measuring Points, and Capacitive Loads

Input Low (V)

Input High (V)

Measuring Point* (V)

1.2-0.125

1.2+0.125

1.2

* Measuring Point = Vtrip

Table 2-57 • LVDS I/O Module

Worst-Case Commercial Conditions VCCA = 1.425V, VCCI = 2.3V, TJ = 70°C

'–2' Speed

'–1' Speed

'Std' Speed

Parameter

Description

Min.

Max.

Min.

Max.

Min.

Max.

Units

LVDS Output Module Timing

tDP

Input Buffer

1.84

2.10

2.47

tPY

Output Buffer

2.36

2.69

3.16

tICLKQ

Clock-to-Q for the I/O input register

0.67

0.77

0.90

tOCLKQ

Clock-to-Q for the IO output register and the I/O

enable register

0.67

0.77

0.90

tSUD

Data Input Set-Up

0.23

0.27

0.31

tSUE

Enable Input Set-Up

0.26

0.30

0.35

tHD

Data Input Hold

0.00

tHE

Enable Input Hold

0.00

tCPWHL

Clock Pulse Width High to Low

0.43

0.48

0.57

tCPWLH

Clock Pulse Width Low to High

0.45

0.51

0.60

tWASYN

Asynchronous Pulse Width

0.43

0.48

0.57

tREASYN

Asynchronous Recovery Time

0.10

tHASYN

Asynchronous Removal Time

0.00

tCLR

Asynchronous Clear-to-Q

0.23

0.27

0.31

tPRESET

Asynchronous Preset-to-Q

0.23

0.27

0.31

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