PCI Express
provides the AC test load for PCI.
Output
Z
0
= 50
Ω
R
L
= 50
Ω
OVDD/2
Figure 43. PCI AC Test Load
shows the PCI input AC timing conditions.
CLK
t
PCIVKH
t
PCIXKH
Input
Figure 44. PCI Input AC Timing Measurement Conditions
shows the PCI output AC timing conditions.
CLK
t
PCKHOV
Output Delay
t
PCKHOZ
High-Impedance
Output
t
PCKHOX
Figure 45. PCI Output AC Timing Measurement Condition
15 PCI Express
This section describes the DC and AC electrical specifications for the PCI Express bus.
15.1
DC Requirements for PCI Express SD_REF_CLK and
SD_REF_CLK
For more information see
MPC8378E PowerQUICC
™
II Pro Processor Hardware Specifications, Rev. 2
64
Freescale Semiconductor