MPC8544EBVTALG datasheet(63/120 Pages) FREESCALE

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MPC8544E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 3

Freescale Semiconductor

PCI

15 PCI

This section describes the DC and AC electrical specifications for the PCI bus of the MPC8544E.

15.1

PCI DC Electrical Characteristics

Table 55 provides the DC electrical characteristics for the PCI interface.

15.2

PCI AC Electrical Specifications

This section describes the general AC timing parameters of the PCI bus. Note that the SYSCLK signal is

used as the PCI input clock. Table 56 provides the PCI AC timing specifications at 66 MHz.

Table 55. PCI DC Electrical Characteristics 1

Parameter

Symbol

Min

Max

Unit

Notes

High-level input voltage

VIH

2OVDD + 0.3

—

Low-level input voltage

VIL

–0.3

0.8

—

Input current (VIN = 0 V or VIN = VDD)IIN

—±5

μA2

High-level output voltage (OVDD = min, IOH = –2mA)

VOH

2.4

—

Low-level output voltage (OVDD = min, IOL = 2 mA)

VOL

—0.4

—

Notes:

1. Ranges listed do not meet the full range of the DC specifications of the

PCI 2.2 Local Bus Specifications.

2. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.

Table 56. PCI AC Timing Specifications at 66 MHz

Parameter

Symbol1

Min

Max

Unit

Notes

SYSCLK to output valid

tPCKHOV

—

7.4

2, 3

Output hold from SYSCLK

tPCKHOX

2.0

—

SYSCLK to output high impedance

tPCKHOZ

—14

2, 4

Input setup to SYSCLK

tPCIVKH

3.7

—

2, 5

Input hold from SYSCLK

tPCIXKH

0.5

—

2, 5

REQ64 to HRESET9 setup time

tPCRVRH

× tSYS

—clocks

6, 7

HRESET to REQ64 hold time

tPCRHRX

050

HRESET high to first FRAME assertion

tPCRHFV

—

clocks

Rise time (20%–80%)

tPCICLK

0.6

2.1

—

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