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Board Manual 51
Intel
®
IQ80321 I/O Processor Evaluation Platform
Hardware Reference Section
3.9 Board Reset Scheme
Figure 15 depicts the reset scheme for the IQ80321. Table 23 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.
Figure 15. RESET Sources
A9458-02
Switch S1H2: Push Button Reset
Jumper J102
SV-2
Circuit
Reset from Primary
PCI-X Connector
Reset
Secondary PCI-X Reset
P-Bus Reset
To PCI-X
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