MPC8347E datasheet(14/108 Pages) FREESCALE

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MPC8347EA MPC8347EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 3

Freescale Semiconductor

RESET Initialization

This section describes the DC and AC electrical specifications for the reset initialization timing and

electrical requirements of the MPC8347EA.

5.1

RESET DC Electrical Characteristics

Table 8 provides the DC electrical characteristics for the RESET pins of the MPC8347EA.

5.2

RESET AC Electrical Characteristics

Table 9 provides the reset initialization AC timing specifications of the MPC8347EA.

Table 8. RESET Pins DC Electrical Characteristics

Characteristic

Symbol

Condition

Min

Max

Unit

Input high voltage

VIH

2.0

OVDD+0.3

Input low voltage

VIL

-0.3

0.8

Input current

IIN

±5

μA

Output high voltage

VOH

IOH = –8.0 mA

2.4

—

Output low voltage

VOL

IOL = 8.0 mA

—

0.5

Output low voltage

VOL

IOL = 3.2 mA

—

0.4

Notes:

1. This table applies for pins PORESET, HRESET, SRESET and QUIESCE.

2. HRESET and SRESET are open drain pins, thus VOH is not relevant for those pins.

Table 9. RESET Initialization Timing Specifications

Parameter/Condition

Min

Max

Unit

Notes

Required assertion time of HRESET or SRESET (input) to

activate reset flow

—

tPCI_SYNC_IN

Required assertion time of PORESET with stable clock applied

to CLKIN when the MPC8347EA is in PCI host mode

—

tCLKIN

Required assertion time of PORESET with stable clock applied

to PCI_SYNC_IN when the MPC8347EA is in PCI agent mode

—

tPCI_SYNC_IN

HRESET/SRESET assertion (output)

512

—

tPCI_SYNC_IN

HRESET negation to SRESET negation (output)

—

tPCI_SYNC_IN

Input setup time for POR configuration signals

(CFG_RESET_SOURCE[0:2] and CFG_CLKIN_DIV) with

respect to negation of PORESET when the MPC8347EA is in

PCI host mode

4—

tCLKIN

Input setup time for POR configuration signals

(CFG_RESET_SOURCE[0:2] and CFG_CLKIN_DIV) with

respect to negation of PORESET when the MPC8347EA is in

PCI agent mode

4—

tPCI_SYNC_IN

MPC8347E Datasheet(PDF) 14 Page - Freescale Semiconductor, Inc

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