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參數(shù)資料
| 型號(hào)： | PPC405EZ-CSAfffTx |
| 廠商： | Applied Micro Circuits Corp. |
| 英文描述： | PowerPC 405EZ Embedded Processor |
| 中文描述： | 嵌入式處理器的PowerPC 405EZ |
| 文件頁數(shù)： | 51/54頁 |
| 文件大?。?/td> | 362K |
| 代理商： | PPC405EZ-CSAFFFTX |
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PPC405EZ – PowerPC 405EZ Embedded Processor
Revision 1.27 - August 22, 2007
AMCC Proprietary
51
Preliminary Data Sheet
Initialization
The following describes the method by which initial chip settings are established when a system reset occurs.
Strapping
When the SysReset input is driven low (system reset), the state of certain I/O pins is read in order to enable default
initial conditions before PPC405EZ start-up. The actual instant of capture is the nearest system clock edge before
the deassertion of reset. These pins must be strapped using external pull-up (logical 1) or pull-down (logical 0)
resistors to select the desired default conditions. The recommended pull-up is 3k
Ω
to +3.3V, or 10k
Ω
to +5V. The
recommended pull-down is 1K
Ω
to GND. These pins are only used for strap functions during reset. They are used
for other signals during normal operation. The following table lists the strapping pins along with their functions and
strapping options. The signal names assigned to the pins for normal operation appear below the pin number.
Table 17. Strapping Pin Assignments
Pin Strapping
E03
(GPIO112)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Function
Option
F03
(GPIO114)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D01
(GPIO111)
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D02
(GPIO110)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Initialize from EBC
8 bits wide
16 bits wide
32 bits wide
512 page, 3 addr cycle
512 page, 4 addr cycle
2K page, 4 addr cycle
2K page, 5 addr cycle
Slow
Fast
na
Initialize from NAND Flash
Initialize from SPI
Reserved
Initialize from IIC
Note:
If reading of initialization data from
the IIC interface fails, the PPC405EZ
defaults to strapping option 0010.
na
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相關(guān)代理商/技術(shù)參數(shù) |
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| PPC405GP-3BE133C | 制造商:AppliedMicro 功能描述:MPU 405GP RISC 32BIT 0.25UM 133MHZ 3.3V 456PIN EBGA - Trays |
| PPC405GP-3BE133CZ | 制造商:AMCC 制造商全稱:Applied Micro Circuits Corporation 功能描述:Power PC 405GP Embedded Processor |
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| PPC405GP-3BE266C | 制造商:AppliedMicro 功能描述:MPU 405GP RISC 32-Bit 0.25um 266MHz 3.3V 456-Pin EBGA Tray |
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