Intel IQ80219 manual Board Reset Scheme, Reset Requirements/Schemes

Intel® IQ80219 General Purpose PCI Processor Evaluation Platform

Hardware Reference Section

3.9Board Reset Scheme

Figure 15 depicts the reset scheme for the IQ80219. Table 23 list the reset schemes for the IQ80219.

Table 23. Reset Requirements/Schemes

Description

Primary PCI reset, resets all devices on the board. It occurs during the power-up.

The SRST signal from the JTAG connector is a bi-directional signal that can force a reset similar to the power-up reset on the board.

Figure 15. RESET Sources

Switch S1H2: Push Button Reset

SV-1

Circuit

Jumper J102

SV-2

Circuit

SV-3

Circuit

To PCI-X

Bridge

Reset

Reset from Primary
PCI-X Connector	JTAG Connector	SRST Signal
	TRST Signal	from/to JTAG
		Emulator
	from JTAG
	Emulator

SV-4

Circuit

Reset	PCI-X	Secondary PCI-X Reset
	Bridge

	Intel 80219	P-Bus Reset
	General Purpose
	PCI Processor
Note: SV - Supervisory

To Intel® 80219

General Purpose PCI

Processor TRST Pin

Intelfi 82544 GbE

PCI-X Connector

UART

FLASH

B2836-01

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