SC1200UCL-266 AMD (ADVANCED MICRO DEVICES), SC1200UCL-266 Datasheet - Page 49

• Manufacturer Part Number: SC1200UCL-266
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of SC1200UCL-266

• Lead Free Status / Rohs Status: Not Compliant

Signal Definitions
3.4
Information in the tables that follow may have duplicate information in multiple tables. Multiple references all contain identi-
cal information.
3.4.1
AMD Geode™ SC1200/SC1201 Processor Data Book
Signal Name
CLKSEL1
CLKSEL0
CLKSEL3
CLKSEL2
BOOT16
LPC_ROM
TFT_PRSNT
FPCI_MON
DID1
DID0
POR#
Signal Descriptions
System Interface
Ball No.
AH9
AF3
P30
D29
P29
C8
D6
C6
C5
B8
A4
Type
I
I
I
I
I
I
I
I
I
Description
Fast-PCI Clock Selects. These strap signals are used to
set the internal Fast-PCI clock.
00 = 33.3 MHz
01 = 48 MHz
10 = 66.7 MHz
11 = 33.3 MHz
During system reset, an internal pull-down resistor of 100
KΩ exists on these balls. An external pull-up or pull-down
resistor of 1.5 KΩ must be used.
Maximum Core Clock Multiplier. These strap signals
are used to set the maximum allowed multiplier value for
the core clock.
During system reset, an internal pull-down resistor of 100
KΩ exists on these balls. An external pull-up or pull-down
resistor of 1.5 KΩ must be used.
Boot ROM is 16 Bits Wide. This strap signal enables
the optional 16-bit wide Sub-ISA bus.
During system reset, an internal pull-down resistor of 100
KΩ exists on these balls. An external pull-up or pull-down
resistor of 1.5 KΩ must be used.
LPC ROM. This strap signal forces selecting of the LPC
bus and sets bit F0BAR1+I/O Offset 10h[15], LPC ROM
Addressing Enable. It enables the SC1200/SC1201 pro-
cessor to boot from a ROM connected to the LPC bus.
During system reset, an internal pull-down resistor of 100
KΩ exists on these balls. An external pull-up or pull-down
resistor of 1.5 KΩ must be used.
TFT Present. A strap used to select multiplexing of TFT
signals at power-up. Enables using TFT instead of Paral-
lel Port, ACB1, and GPIO17.
During system reset, an internal pull-down resistor of 100
KΩ exists on these balls. An external pull-up or pull-down
resistor of 1.5 KΩ must be used.
Fast-PCI Monitoring. The strap on this ball forces selec-
tion of Fast-PCI monitoring signals. For normal operation,
strap this signal low using a 1.5 KΩ resistor. The value of
this strap can be read at MCR[30].
Device ID. Together, the straps on these signals define
the system-level chip ID.
The value of DID1 can be read in the MCR[29]. The
value of DID0 can be read in the MCR[31].
DID1 and DID0 should be connected to a 1.5 KΩ pull-
down resistor to ensure a low level at power-up.
Power On Reset. POR# is the system reset signal gen-
erated from the power supply to indicate that the system
should be reset.
32579B
SDATA_OUT
ROMCS#
PCICLK1
PCICLK0
SOUT1
SOUT2
GNT1#
GNT0#
SYNC
Mux
RD#
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