PCI/PCI-X
provides the AC test load for PCI and PCI-X.
Output
Z
0
= 50
Ω
R
L
= 50
Ω
OV
DD
/2
Figure 31. PCI/PCI-X AC Test Load
shows the PCI/PCI-X input AC timing conditions.
CLK
t
PCIVKH
t
PCIXKH
Input
Figure 32. PCI-PCI-X Input AC Timing Measurement Conditions
shows the PCI/PCI-X output AC timing conditions.
CLK
t
PCKHOV
Output Delay
t
PCKHOZ
High-Impedance
Output
Figure 33. PCI-PCI-X Output AC Timing Measurement Condition
provides the PCI-X AC timing specifications at 66 MHz.
Table 43. PCI-X AC Timing Specifications at 66 MHz
Parameter
SYSCLK to signal valid delay
Output hold from SYSCLK
SYSCLK to output high impedance
Input setup time to SYSCLK
Input hold time from SYSCLK
REQ64 to HRESET setup time
HRESET to REQ64 hold time
HRESET high to first FRAME assertion
Symbol
t
PCKHOV
t
PCKHOX
t
PCKHOZ
t
PCIVKH
t
PCIXKH
t
PCRVRH
t
PCRHRX
t
PCRHFV
Min
—
0.7
—
1.7
0.5
10
0
10
Max
3.8
—
7
—
—
—
50
—
Unit
ns
ns
ns
ns
ns
clocks
ns
clocks
Notes
1, 2, 3,
7, 8
1, 10
1, 4, 8, 11
3, 5
10
11
11
9, 11
MPC8540 Integrated Processor Hardware Specifications, Rev. 4
52
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
