AMD Geode LX 600@0.7W Data Book page 34

33234H
3.4.1 System Interface Signals (Continued)
Ball
Signal Name No.
TDP AL17
TDN AK17
3.4.2 PLL Interface Signals
Ball
Signal Name No.
CAV W31
DD
CAV W30
SS
MAV V31
DD
MAV V30
SS
VAV AA1
DD
VAV AA2
SS
CLPF W29
MLPF V29
VLPF AA3
34
Type f
A Analog
A Analog
Type f
APWR Analog
APWR Analog
APWR Analog
APWR Analog
APWR Analog
APWR Analog
A Analog
A Analog
A Analog
V Description
N/A Thermal Diode Positive (TDP). TDP is the positive
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.
For accurate die temperature measurements, a dual
current source remote sensor, such as the National
Semiconductor LM82, should be used. Single cur-
rent source sensors may not yield the desired level
of accuracy.
If reading the CPU temperature is required while the
system is off, then a small bias (<0.25V) on V
required for the thermal diode to operate properly.
N/A Thermal Diode Negative (TDN). TDN is the nega-
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 TDP.
For accurate die temperature measurements, a dual
current source remote sensor, such as the National
Semiconductor LM82, should be used. Single cur-
rent source sensors may not yield the desired level
of accuracy.
If reading the CPU temperature is required while the
system is off, then a small bias (<0.25V) on V
required for the thermal diode to operate properly.
V Description
3.3 Core PLL Analog Power. Connect to 3.3V.
0 Core PLL Analog Ground. Connect to ground.
3.3 GLIU PLL Analog Power. Connect to 3.3V.
0 GLIU PLL Analog Ground. Connect to ground.
3.3 Video PLL Analog Power. Connect to 3.3V.
0 Video PLL Analog Ground. Connect to ground.
N/A Core PLL Low Pass Filter. 220 pF to CAV
N/A GLIU PLL Low Pass Filter. 220 pF to MAV
N/A Video PLL Low Pass Filter. 220 pF to VAV
AMD Geode™ LX Processors Data Book
Signal Definitions
is
IO
is
IO
.
SS
SS.
SS.