AX500-1BG896 ACTEL [Actel Corporation], AX500-1BG896 Datasheet - Page 44

• Manufacturer Part Number: AX500-1BG896
• Description: Axcelerator Family FPGAs
• Manufacturer: ACTEL [Actel Corporation]

3.3V PCI, 3.3V PCI-X
Peripheral Component Interface for 3.3V standard specifies support for both 33 MHz and 66 MHz PCI bus applications.
It uses an LVTTL input buffer and a push-pull output buffer. The input and output buffers are 5V tolerant with the aid
of external components. Axcelerator 3.3V PCI and 3.3V PCI-X buffers are compliant with the PCI Local Bus Specification
Rev. 2.1.
The PCI Compliance Specification requires the clamp diodes to be able to withstand for 11 ns, -3.5V in undershoot, and
7.1V in overshoot.
Table 2-32 • DC Input and Output Levels
AC Loadings
Figure 2-18 • AC Test Loads
Table 2-33 • AC Waveforms, Measuring Points, and Capacitive Loads
2 -3 0
PCI
PCI-X
* Measuring Point = V
Axcelerator Family FPGAs
Input Low (V)
Test Point
for tristate
Min,V
trip
-0.5
-0.5
(Per PCI Spec and PCI-X Spec)
R=1k
V
Input High (V)
IL
0.35V
Max,V
0.3V
35 pF for t
5 pF for t
R to V
R to GND for t
CCI
CCI
CCI
phz
for t
pzl
0.5V
0.5V
Min,V
/t
/t
plz
plz
pzh
phz
CCI
CCI
Measuring Point* (V)
/t
/t
pzl
pzh
V
IH
V
V
Max,V
v2.7
CCI
CCI
Test point for data
+0.5
+0.5
Max,V
V
R=25
OL
GND
V
REF
(typ) (V)
N/A
(per PCI specification)
(per PCI specification)
R to V
R to GND for t
10pF
Min,V
V
OH
CCI
for t
pl
ph
mA
I
OL
C
load
10
(pF)
mA
I
OH