Power And Ground Connections - AMD Geode SC1200 Data Book

32579B
3.4.21

Power and Ground Connections

Signal Name Ball No.
AV
SSPLL2
AV
SSPLL3
V
PLL2
V
PLL3
AV
CCUSB
AV
SSUSB
AV A12, C13, D15
CCCRT
AV B14, C14, C15
SSCRT
V
CCCRT
V
SSCRT
AV
CCTV
AV
SSTV
V
BAT
V
SB
V
SBL
V See Table 3-3
CORE
on page 40
(Total of 28)
V See Table 3-3
IO
on page 40
(Total of 42)
V See Table 3-3
SS
on page 40
(Total of 91)
1. All power sources except V
70
1
Type Description
C16 GND Analog PLL2 Ground Connection.
AK3 GND Analog PLL3 Ground Connection.
A17 PWR 3.3V PLL2 Analog Power Connection. Low noise power for PLL2 and
PLL5.
AJ4 PWR 3.3V PLL3 Analog Power Connection. Low noise power for PLL3,
PLL4, and PLL6.
D27 PWR 3.3V Analog USB Power Connection. Low noise power for USB.
C27 GND Analog USB Ground Connection.
PWR 3.3V Analog CRT DAC Power Connections. Low noise power.
GND Analog CRT DAC Ground Connections. Return
current.
D12 PWR 1.8V CRT DAC Digital Power Connection. Can be directly connected to
V
CORE
C12 GND CRT DAC Digital Ground Connection. Can be directly connected to V
on PCB.
D23 PWR 3.3V Analog TV DAC Power Connection. Low noise power.
B24 GND Analog TV DAC Ground Connection. Return current.
AL3 PWR Battery. Provides battery back-up to the RTC and ACPI registers, when
V is lower than the minimum value (see Table 9-3 on page 366). The
SB
ball is connected to the internal logic through a series resistor for UL pro-
tection. If battery backup is not desired, connect V
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.
AL6 PWR 1.8V Standby Power Supply. Provides power to the internal logic while
the main power supply is turned off. This signal requires a 0.1 μF bypass
capacitor to V
PWR 1.8V Core Processor Power Connections.
PWR 3.3V I/O Power Connections.
GND Ground Connections.
must be connected, even if the function is not used.
BAT
on PCB (printed circuit board).
. This supply must be present when V
SS
AMD Geode™ SC1200/SC1201 Processor Data Book
Signal Definitions
SS
to V .
BAT SS
is present.
SB