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Schematics Checklist—Intel
Table 100.
Schematic Checklist (Sheet 9 of 26)
Checklist Items
GP34_IRQ34
GP40_IRQ35
GP41_LDRQ[1]#
GPIO[48]
IICH Interrupts
SERIRQ
LAD[3:0],
LFRAME#,
LDRQ[0]#
LDRQ[1]# (GPIO[41]) See General Purpose I/O (GPIO) Interface
PCICLK
SPI_MOSI
®
Intel
EP80579 Integrated Processor Product Line
Order Number: 320068-005US
®
EP80579 Integrated Processor Product Line
I/O Type
Recommendations
(Default)
• Input/Output configurable if
used as GPIO[34].
I/O
• Can be used as IRQ[34]
• Input only if used as GPIO[40].
I
• Can be used as IRQ[35]
• Input only if used as GPIO[41].
I
• Can be used as LPC DMA
Request input (LDRQ[1])
O
• Output Only (GPO).
• Connect to SuperIO (SIO)
I
SER_IRQ pin
Firmware Hub/Low Pin Count (FWH/LPC) Interface
• No external pull-ups required.
I/O
• Connect straight to FWH/TPM/
SuperIO/Port80 Display
• Connect to SuperIO LDRQ#
I
output
• Connect to one of six sets of
33 MHz clock outputs from
CK410 Clock Synthesizer
I
• Connect clocks through 33 Ω
±5% series resistor
Serial Peripheral Interface (SPI) - System BIOS Topology
• Connect to the serial data input
pin of the flash device.
O
• Connect signal
±1% series resistor
• Place resistor close to EP80579
• No external pull-up required if used
in IRQ mode.
Note:
• Must be pulled high through a 10
KΩ resistor if not used.
• Resides in Core Power Well
• No external pull-up required if used
in IRQ mode.
Note:
• Must be pulled high through a 10
KΩ resistor if not used.
• Resides in Core Power Well
• 50KΩ internal pull-up
• No external Pullup Required
• 50KΩ internal pull-up
• No external Pullup Required
• Should not be pulled down.
• Serial Interrupt Request. This signal
implements the serial interrupt
protocol.
Note:
• Must be pulled high through a 10
KΩ resistor if used in PIRQ mode.
• Resides in Core Power Well
• 50KΩ internal pull-up
• No external Pullup Required
• Should not be pulled down.
Note:
• See
Section 2.3
Note:
• Can be left as NC when the port is
through a 15 Ω
not connected to an interfacing
device.
Comments
May 2010
292
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