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G
Signal Definitions
(Continued)
2.4.20 Power, Ground and No Connections
1
1.
All power sources must be connected, even if the function is not used
Signal Name
Ball No.
Type
Description
EBGA
TEPBGA
AV
SSPLL2
R3
C16
GND
PLL2 Analog Ground Connection.
AV
SSPLL3
E28
AK3
GND
PLL3 Analog Ground Connection.
V
PLL2
R1
A17
PWR
3.3V PLL2 Analog Power Connection.
Low noise
power for PLL2 and PLL5.
V
PLL3
C31
AJ4
PWR
3.3V PLL3 Analog Power Connection.
Low noise
power for PLL3, PLL4, and PLL6.
AV
CCUSB
AF4
D27
PWR
3.3V Analog USB Power Connection.
Low noise
power.
AV
SSUSB
AG1
C27
GND
Analog USB Ground Connection.
AV
CCCRT
L3, M1, N1
A12, C13, D15
PWR
3.3V Analog CRT DAC Power Connections.
Low
noise power.
AV
SSCRT
L1, N3, P3
B14, C14, C15
GND
Analog CRT DAC Ground Connections
. Return
current.
V
CCCRT
K3
D12
PWR
1.8V / 2.0V CRT DAC Digital Power Connection.
Can
be directly connected to V
CORE
on PCB (printed circuit
board).
V
SSCRT
K2
C12
GND
CRT DAC Digital Ground Connection.
Can be
directly connected to V
SS
on PCB.
V
BAT
D30
AL3
PWR
Battery.
Provides battery back-up to the RTC and
ACPI registers, when V
SB
is lower than the minimum
value (see Table 8-2 on page 358). The ball is con-
nected to the internal logic through a series resistor for
UL protection.
V
SB
F29
AL5
PWR
3.3V Standby Power Supply.
Provides power to the
Real-Time Clock (RTC) and ACPI circuitry while the
main power supply is turned off.
V
SBL
H28
AL6
PWR
1.8V / 2.0V Standby Power Supply.
Provides power to
the internal logic while the main power supply is turned
off. This signal requires a 0.1
μ
F bypass capacitor to
V
SS
. This supply must be present when V
SB
is present.
V
CORE
See Table 2-3
on page 32.
(Total of 25)
See Table 2-5
on page 47.
(Total of 28)
PWR
1.8V / 2.0V Core Processor Power Connections.
V
IO
See Table 2-3
on page 32.
(Total of 32)
See Table 2-5
on page 47.
(Total of 43)
PWR
3.3V I/O Power Connections.
V
SS
See Table 2-3
on page 32.
(Total of 57)
See Table 2-5
on page 47.
(Total of 92)
GND
Ground Connections.
NC
See Table 2-3
on page 32.
(Total of 8)
See Table 2-5
on page 47.
(Total of 8)
---
No Connections.
These lines should be left discon-
nected. Connecting a pull-up/-down resistor or to an
active signal could cause unexpected results and pos-
sible malfunctions.