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| 型号： | 405EX |
| 厂商： | Applied Micro Circuits Corp. |
| 英文描述： | PowerPC 405EX Embedded Processor |
| 中文描述： | 嵌入式处理器的PowerPC 405EX |
| 文件页数： | 62/67页 |
| 文件大小： | 457K |
| 代理商： | 405EX |
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PPC405EX – PowerPC 405EX Embedded Processor
Revision 1.09 - August 21, 2007
AMCC Proprietary
65
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 PPC405EX 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 10kΩ 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 25. Strapping Pin Assignments
Pin Strapping
Initialization Source
Option
F04
(UART0DCD)
F02
(UART0DSR)
G02
(UART0CTS)
EBC 8-bit wide ROM
A
0
EBC 16-bit wide ROM
B
0
1
EBC 16-bit wide ROM
C
0
1
0
EBC 8-bit wide NAND Flash
D
0
1
EBC 8-bit wide NAND Flash
E
1
0
IIC ROM at address 0xA8
G
1
0
1
EBC 8-bit wide ROM
F
1
0
IIC ROM at address 0xA4
H
1
Note: See the PPC405EX Embedded Processor User’s Manual for option descriptions and other details regarding the boot process.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 405EXR | 制造商:AMCC 制造商全称:Applied Micro Circuits Corporation 功能描述:Embedded Processor |
| 405EZ | 制造商:AMCC 制造商全称:Applied Micro Circuits Corporation 功能描述:PowerPC 405EZ Embedded Processor |
| 405F | 功能描述:鼓风机 40x10mm 5VDC 4.7CFM .7W 5400RPM 23dBA SB RoHS:否 制造商:Murata 产品:Blowers 电流类型:DC 电源电压:5.3 V 气流:1 l/min 轴承类型: 噪声: 速度: 功率额定值: 框架尺寸 (mm):20 mm x 20 mm x 1.85 mm 外壳材料: 端接类型:SMD/SMT 系列:MZB |
| 405F | 制造商:ebm-papst Inc 功能描述:FAN 40MM 5VDC |
| 405F/2H | 功能描述:风扇 40x40x10mm 5VDC RoHS:否 制造商:Sanyo Denki 产品:Fans 电流类型: 电源电压:48 V 气流:636 CFM 轴承类型: 噪声:83 dBA 速度:6400 RPM 功率额定值:264 W 框架尺寸 (mm):172 mm x 150 mm x 102 mm 外壳材料:Aluminum 端接类型:Wire 系列: |
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