MPC8378E datasheet(63/128 Pages) FREESCALE

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MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8

Freescale Semiconductor

14 PCI

This section describes the DC and AC electrical specifications for the PCI bus of the chip.

14.1

PCI DC Electrical Characteristics

This table provides the DC electrical characteristics for the PCI interface of the device. The DC

characteristics of the PORESET signal, which can be used as PCI RST in applications where the device is

a PCI agent, deviates from the standard PCI levels.

14.2

PCI AC Electrical Specifications

This section describes the general AC timing parameters of the PCI bus of the device. Note that the

PCI_CLK/PCI_SYNC_IN or CLKIN signal is used as the PCI input clock depending on whether the chip

is configured as a host or agent device. CLKIN is used when the device is in host mode.

This table shows the PCI AC timing specifications at 66 MHz.

Table 53. PCI DC Electrical Characteristics

Parameter

Condition

Symbol

Min

Max

Unit

High-level input voltage

VOUT ≥ VOH (min) or

VIH

2.0

OVDD + 0.5

Low-level input voltage

VOUT ≤ VOL (max)

VIL

–0.5

0.3

× OVDD

High-level output voltage

IOH = –500 μAVOH

0.9

× OVDD

—V

Low-level output voltage

IOL = 1500 μAVOL

—0.1

× OVDD

Input current

0 V

≤ VIN ≤ OVDD

IIN

—

± 30

μA

Note:

• The symbol VIN, in this case, represents the OVIN symbol referenced in Table 2.

Table 54. PCI AC Timing Specifications at 66 MHz

PCI_SYNC_IN clock input levels are with next levels: VIL = 0.1

× OV

DD, VIH = 0.7 × OVDD.

Parameter

Symbol1

Min

Max

Unit

Note

Clock to output valid

tPCKHOV

—6.0

Output hold from clock

tPCKHOX

1—

Clock to output high impedance

tPCKHOZ

—14

2, 3

Input setup to clock

tPCIVKH

3.0

—

2, 4

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