Revision 1.26 - June 16, 2008
PowerPC 440SPe Embedded Processor
Data Sheet
Table 6. Signal Functional Description (Sheet 8 of 8)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3kΩ to 3.3V)
3. Must pull down (recommended value is 1kΩ)
4. If not used, must pull up (recommended value is 3kΩ to 3.3V)
5. If not used, must pull down (recommended value is 1kΩ)
6. Strapping input during reset; pull-up or pull-down required
Signal Name
Description
Ground for the SYS_PLL
I/O
Type
Notes
SYSPLLG
n/a
n/a
Analog 1.5V Filtered Supply voltages input for the
SYS_PLL
SYSPLLV
I
n/a
I
n/a
n/a
n/a
A separate filter for all analog voltages is recommended.
SYS2PLLG
SYS2PLLV
GND
Ground for the DDR_PLL (SDRAM)
Analog 1.5V Filtered Supply voltages input for the
DDR_PLL (SDRAM)
A separate filter for all analog voltages is recommended.
Logic and I/O voltage ground.
n/a
n/a
n/a
n/a
OV
DD
3.3V I/O supply (except DDR SDRAM and PCI-X).
PCI-X I/O voltage supply.
3.3 V for PCI and PCI-X
PxV
DD
n/a
n/a
n/a
n/a
n/a
n/a
1.5 V for PCI-X 266 DDR Mode 2
DDR SDRAM I/O voltage supply.
2.5V for DDR1 SDRAM
SV
DD
1.8V for DDR2 SDRAM
Voltage supply for:
V
1.5V internal logic
DD
1.5V HSS I/Os for the PCI Express ports
Miscellaneous
PSRO1
Performance Screen Ring Oscillator.
n/a
n/a
n/a
5
THERMALDA
THERMALDB
On chip Diode for thermal monitoring.
I
P diffusion on Pad A (In), and N on pad B (out)
O
Do not connect voltage, ground, or any signals to these
pins.
Reserved
n/a
AMCC Proprietary
57
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
