MPC8378E datasheet(15/127 Pages) FREESCALE

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MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 4

Freescale Semiconductor

RESET Initialization

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

electrical requirements of the MPC8378E.

5.1

RESET DC Electrical Characteristics

Table 10 provides the DC electrical characteristics for the RESET pins of the device.

5.2

RESET AC Electrical Characteristics

Table 11 provides the reset initialization AC timing specifications of the device.

Table 10. 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

——

± 30

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

Note:

• This table applies for pins PORESET and HRESET. The PORESET is input pin, thus stated output voltages are not relevant.

• HRESET and SRESET are open drain pin, thus VOH is not relevant for these pins.

Table 11. RESET Initialization Timing Specifications

Parameter/Condition

Min

Max

Unit

Notes

Required assertion time of HRESET to activate reset flow

—

tPCI_SYNC_IN

Required assertion time of PORESET with stable clock applied to CLKIN when

the device is in PCI host mode

—

tCLKIN

Required assertion time of PORESET with stable clock applied to PCI_CLK when

the device is in PCI agent mode

—

tPCI_SYNC_IN

HRESET assertion (output)

512

—

tPCI_SYNC_IN

HRESET negation to negation (output)

—

tPCI_SYNC_IN

Input setup time for POR config signals (CFG_RESET_SOURCE[0:3],

CFG_CLKIN_DIV, and CFG_LBMUX) with respect to negation of PORESET

when the device is in PCI host mode

4—

tCLKIN

Input setup time for POR config signals (CFG_RESET_SOURCE[0:3],

CFG_CLKIN_DIV, and CFG_LBMUX) with respect to negation of PORESET

when the device is in PCI agent mode

4—

tPCI_SYNC_IN

Input hold time for POR config signals with respect to negation of HRESET

0—

—

MPC8378E Datasheet(PDF) 15 Page - Freescale Semiconductor, Inc

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