ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 33

• Manufacturer Part Number: ALXD800EEXJ2VD
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VD

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Signal Definitions
3.4
3.4.1
AMD Geode™ LX Processors Data Book
Signal Name
SYSREF
DOTREF
INTA#
IRQ13
CIS
SUSPA#
PW0, PW1
TDP
Signal Descriptions
System Interface Signals
(Strap)
(Strap)
(Strap)
AD28
AL18,
AB29
AE29
AC31
AJ17
AL17
AB1
Ball
Y31
No.
Type
(PD)
(PD)
I/O
I/O
I/O
I/O
I/O
A
I
I
33, 66 MHz
0-300 Mb/s
0-66 Mb/s
0-66 Mb/s
0-66 Mb/s
0-66 Mb/s
48 MHz
Analog
f
N/A
3.3
3.3
3.3
3.3
3.3
3.3
3.3
V
Description
System Reference. PCI input clock; typically 33 or
66 MHz.
Dot Clock Reference. Input clock for DOTCLK
PLL.
Interrupt. Interrupt from the Geode™ LX processor
to the CS5536 companion device (open drain).
Interrupt Request Level 13. When a floating point
error occurs, the Geode LX processor asserts
IRQ13. The floating point interrupt handler then
performs an OUT instruction to I/O address F0h or
F1h. The Geode LX processor accepts either of
these cycles and clears IRQ13.
IRQ13 is an output during normal operation. It is an
input at reset and functions as a boot strap for
tester features on a board. It must be pulled low for
normal operation.
CPU Interface Serial. The GLCP I/O companion
interface uses the CIS signal to create a serial bus.
It contains INTR#, SUSP#, NMI#, INPUT_DIS#,
OUTPUT_DIS#, and SMI#. For details see
"GIO_PCI Serial Protocol" on page 534.
Suspend Acknowledge. Suspend Acknowledge
indicates that the Geode LX processor has entered
low-power Suspend mode as a result of SUSP#
assertion (as part of the packet asserted on the CIS
signal) or execution of a HLT instruction. (The
Geode LX processor enters Suspend mode follow-
ing execution of a HLT instruction if the SUS-
PONHLT bit, MSR 00001210h[0], is set.)
The SYSREF input may be stopped after SUSPA#
has been asserted to further reduce power con-
sumption if the system is configured for 3 Volt Sus-
pend mode.
SUSPA# is an output during normal operation. It is
an input at reset and functions as a boot strap for
frequency selection on a board. It must be pulled
high or low to invoke the strap.
PowerWise Controls. Used for debug.
PWx is an output during normal operation. It is an
input at reset and functions as a boot strap for fre-
quency selection on a board. It must be pulled high
or low to invoke the strap.
Thermal Diode Positive (TDP). TDP is the posi-
tive terminal of the thermal diode on the die. The
diode is used to do thermal characterization of the
device in a system. This signal works in conjunction
with TDN.
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