ppc460ex Applied Micro Circuits Corporation (AMCC), ppc460ex Datasheet - Page 58

• Manufacturer Part Number: ppc460ex
• Description: Powerpc 460ex Embedded Processor
• Manufacturer: Applied Micro Circuits Corporation (AMCC)

460EX – PPC460EX Embedded Processor
Signal Descriptions
The PPC460EX embedded controller is packaged in a 728-ball thermally enhanced plastic ball grid array (TE-
PBGA). The following tables describe the package level pin-out.
In the table Table 7 on page 60, 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. Please see Table 3 on page 22 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. In most cases,
the signal names shown in the following table are not accompanied by signal names that might share the same pin.
If you need to know what, if any, signals are multiplexed with a particular signal, look up the name in Table 3 on
page 22. 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.
Multipurpose Signals
In addition to multiplexing, some pins such as those carrying the EOTx/TCx signals are also multipurpose. Control
of which function a multipurpose pin has is determined by direction, register settings, and so on. Both functions are
shown separated by a slash (/).
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Table 5. Pin Summary
Total Signal Pins
Total Power Pins
Total Pins
SPAGND
Reserved
E1OV
E2OV
SPAV
EAGND
SOV
PAV
EAV
Group
AGND
OV
AV
GND
V
DD
DD
DD
DD
DD
DD
DD
DD
DD
No. of Pins
429
160
289
728
37
23
16
10
18
17
10
2
2
1
1
1
1
Preliminary Data Sheet
Revision 1.12 – July 17, 2008
AMCC Proprietary