Intel IQ80321 User Manual
Board Manual
51
Intel
®
IQ80321 I/O Processor Evaluation Platform
Hardware Reference Section
3.9
Board Reset Scheme
depicts the reset scheme for the IQ80321.
list the reset schemes for the IQ80321.
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.
power-up reset on the board.
Figure 15.
RESET Sources
A9458-02
Switch S1H2: Push Button Reset
Jumper J102
SV-2
Circuit
Reset from Primary
PCI-X Connector
PCI-X Connector
Reset
Secondary PCI-X Reset
P-Bus Reset
To PCI-X
Bridge
Reset
Bridge
Reset
SV-1
Circuit
SV-3
Circuit
SV-4
Circuit
To
Intel
®
80321
TRST Pin
SRST Signal
from/to JTAG
Emulator
TRST Signal
from JTAG
Emulator
JTAG Connector
PCI-X
Bridge
Intel
®
82544 GbE
PCI-X Connector
UART
FLASH
Intel
80321
I/O Processor
Note: SV - Supervisory