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44409
Rev.
1.70
October 10
AMD SP5100 Databook
Integrated Resistor and External Pull-up/Pull-down Resistor
Requirements
25
Interface
Signal Name
Value of
Integrated / External
Resistor
Resistor Type
Register for
programming the
integrated PU/PD
AD[31:23]
Integrated 15 K
Pull-up
PM_REG 41h /
PM_REG 40h
Default: Pull-up
enabled
FRAME#
Integrated 8.2 K
Pull-up
—
TRDY#/ROMOE#
Integrated 8.2 K
Pull-up
—
IRDY#
Integrated 8.2 K
Pull-up
—
DEVSEL#/ROMA0
Integrated 8.2 K
Pull-up
—
STOP#
Integrated 8.2 K
Pull-up
—
SERR #
Integrated 8.2 K
Pull-up
—
PCI_PERR#
Integrated 8.2 K
Pull-up
—
LOCK#
Integrated 8.2 K
Pull-up
—
CLKRUN#
Integrated 8.2 K
Pull-up
—
REQ0#
Integrated 15 K
Pull-up
—
REQ1#
Integrated 15 K
Pull-up
—
REQ2#
Integrated 15 K
Pull-up
—
REQ3#/GPIO70
Integrated 15 K
Pull-up
(See GPIO section
below)
REQ4#/GPIO71
Integrated 15 K
Pull-up
(See GPIO section
below)
BMREQ#/REQ5#/GPIO65
External Pull-up if used
as REQ5#
Pull-up
(See GPIO section
below)
LPC/
SIO/
SPI
LAD[3:0]
Integrated 15 K
Pull-up
—
LDRQ0#
Integrated 15 K
Pull-up
—
LDRQ1#/GNT5#/GPIO68
Integrated 15 K
Pull-up
(See GPIO section
below)
LPC_SMI#/EXTEVNT1#
Integrated 10 K
Pull-up
(See GEVENT
section below)
SERIRQ
Integrated 8.2 K
Pull-up
—
GA20IN
Integrated 8.2 K
Pull-up
—
KBRST#
Integrated 8.2 K
Pull-up
—
SPI_CLK/GPIO47
Integrated 10 K
Pull-down
(See GPIO section
below)
SPI_DI/GPIO12
Integrated 10 K
Pull-down
(See GPIO section
below)
SPI_DO/GPIO11
Integrated 10 K
Pull-down
(See GPIO section
below)
SPI_HOLD#/GPIO31
Integrated 10 K
Pull-up
—
SPI_CS1#/GPIO32
Integrated 10 K
Pull-up
—
SPI_CS2#/IMC_GPIO2
Integrated 10 K
Pull-up
LPC PCI config
CEh; default Pull-up
disabled