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參數(shù)資料
| 型號： | PPC405CR |
| 廠商： | Applied Micro Circuits Corp. |
| 英文描述： | PowerPC 405CR Embedded Processor |
| 中文描述： | 嵌入式處理器的PowerPC 405CR |
| 文件頁數(shù)： | 21/42頁 |
| 文件大?。?/td> | 446K |
| 代理商： | PPC405CR |
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PPC405CR – PowerPC 405CR Embedded Processor
Revision 1.02 – January 11, 2005
Data Sheet
AMCC
21
Signal Descriptions
The PPC405CR embedded controller is packaged in a 316-ball enhanced plastic ball grid array (E-PBGA). The fol-
lowing table provides a summary of the number of package pins associated with each functional interface group.
Multiplexed Pins
In the table “Signal Functional Description” on page 23, each I/O signal is listed along with a short description of the
signal function. Some signals are multiplexed onto the same package pin (ball) so that the pin can be used for dif-
ferent functions. Multiplexed signals are shown as a default signal with a secondary signal in square brackets (for
example, GPIO1[TS1E]). Active-low signals (for example, RAS) are marked with an overline.
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.
In addition to multiplexing, many pins are also multi-purpose. For example, the EBC peripheral controller address
pins are used as outputs by the PPC405CR to broadcast an address to external slave devices when the
PPC405CR has control of the external bus. When during the course of normal chip operation an external master
gains ownership of the external bus, these same pins are used as inputs which are driven by the external master
and received by the EBC in the PPC405CR.
Intialization Strapping
One group of pins is used as strapped inputs during system reset. These pins function as strapped inputs only dur-
ing reset and are used for other functions during normal operation (see “Strapping” on page 39). Note that these
are
not multiplexed
pins since the function of the pins is not programmable.
Pull-Up and Pull-Down Resistors
Pull-up and pull-down resistors are used for strapping during reset and to retain unused or undriven inputs in an
appropriate state. The recommended pull-up value of 3k
to +3.3V (10k
to +5V can be used on 5V tolerant I/Os)
and pull-down value of 1k
to GND, applies only to individually terminated signals. To prevent possible damage to
the device, I/Os capable of becoming outputs
must never
be tied together and terminated through a common
resistor.
Table 5. Pin Summary
Group
No. of Pins
SDRAM
71
External Peripheral
97
External Master
9
Internal Peripheral
15
Interrupts
7
JTAG
5
System
18
Total Signal Pins
222
AV
DD
1
OV
DD
16
V
DD
16
Gnd
40
Thermal (and Gnd)
16
Reserved
5
Total Pins
316
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PPC405CR-3BC133C | PowerPC 405CR Embedded Processor |
| PPC405CR-3BC133CZ | PowerPC 405CR Embedded Processor |
| PPC405CR-3BC200C | PowerPC 405CR Embedded Processor |
| PPC405CR-3BC200CZ | PowerPC 405CR Embedded Processor |
| PPC405CR-3BC266C | PowerPC 405CR Embedded Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PPC405CR-3BC133C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:PowerPC 405CR Embedded Processor |
| PPC405CR-3BC133CZ | 制造商:AppliedMicro 功能描述:MPU 405CR RISC 32BIT 0.25UM 133MHZ 3.3V 316PIN EBGA - Tape and Reel |
| PPC405CR-3BC200C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:PowerPC 405CR Embedded Processor |
| PPC405CR-3BC200CZ | 制造商:AppliedMicro 功能描述:MPU 405CR RISC 32BIT 0.25UM 200MHZ 3.3V 316PIN EBGA - Tape and Reel |
| PPC405CR-3BC266C | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:PowerPC 405CR Embedded Processor |
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