MPC8548ECPXATHC datasheet(60/151 Pages) FREESCALE

60 / 151 page

MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 9

Freescale Semiconductor

PCI/PCI-X

15 PCI/PCI-X

This section describes the DC and AC electrical specifications for the PCI/PCI-X bus of the device.

Note that the maximum PCI-X frequency in synchronous mode is 110 MHz.

15.1

PCI/PCI-X DC Electrical Characteristics

This table provides the DC electrical characteristics for the PCI/PCI-X interface.

15.2

PCI/PCI-X AC Electrical Specifications

This section describes the general AC timing parameters of the PCI/PCI-X bus. Note that the clock

reference CLK is represented by SYSCLK when the PCI controller is configured for synchronous mode

and by PCIn_CLK when it is configured for asynchronous mode.

Table 50. GPIN DC Electrical Characteristics (2.5 V DC)

Parameter

Symbol

Min

Max

Unit

Supply voltage 2.5 V

BVDD

2.37

2.63

High-level input voltage

VIH

1.70

BVDD +0.3

Low-level input voltage

VIL

–0.3

0.7

Input current

(BVIN

1 = 0 V or BV

IN = BVDD)

IIH

—10

A

Note:

1. The symbol BVIN, in this case, represents the BVIN symbol referenced in Table 1.

Table 51. PCI/PCI-X DC Electrical Characteristics1

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

A2

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

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

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