ppc440spe Applied Micro Circuits Corporation (AMCC), ppc440spe Datasheet - Page 49

• Manufacturer Part Number: ppc440spe
• Description: Powerpc 440spe Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

PowerPC 440SPe Embedded Processor
Signal Description
The PPC440SPe embedded controller is packaged in a 27mm Flip-Chip Plastic Ball Grid Array (FC-PBGA). The
following tables describe the package level pinout.
In the table “Signal Functional Description” on page 50, each I/O signal is listed along with a short description of its
function. Active-low signals (for example, RAS) are marked with an overline. See “Signals Listed Alphabetically” on
page 17 for the pin (ball) number to which each signal is assigned.
Multiplexed Signals
Some signals are multiplexed on the same pin so that the pin can be used for different functions. The signal names
shown in Table 6 on page 50 are not accompanied by signal names that might be multiplexed on the same pin. It is
expected that in any single application a particular pin will always be programmed to serve the same function. The
flexibility of multiplexing allows a single chip to offer a richer pin selection than would otherwise be possible.
Strapping Pins
One group of pins is used as strapped inputs during system reset. These pins function as strapped inputs only
during reset and are used for other functions during normal operation (see “Strapping” on page 77). Note that
these are not multiplexed pins since the function of the pins is not programmable.
Multipurpose Signals
In addition to multiplexing, some pins are also multi-purpose. For example, the PCIX0Ack can function instead as
PCIX0ECC1 depending on the PCI interface mode of operation.
AMCC Proprietary
Table 5. Pin Summary
SV
PxV
AxV
DD
Total Signal Pins
Total Power Pins
OV
V
AxV
DD
DD
(2.5/1.8V SDRAM)
DD
Total Pins
DD
Reserved
AxGND
Group
(3.3/1.5V PCI)
(1.5V logic)
DD
GND
(3.3V I/Os)
(2.5V HSS)
(1.5V)
No. of Pins
495
675
23
14
14
28
83
3
6
5
4
Preliminary Data Sheet
Revision 1.23 - Sept 21, 2006
49