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參數(shù)資料
| 型號： | MPC184VFB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PBGA252 |
| 封裝： | MAPBGA-252 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 426K |
| 代理商： | MPC184VFB |
MPC184 PCI Mode Hardware Reference Manual
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
System Architecture
2 System Architecture
The MPC184 is designed to integrate easily into any system using the 8xx or PCI bus protocol. The MPC184
is ideal in any system using a Motorola PowerQUICC communications processor (as shown in Figure 1) or
any system with 32b PCI such as the Motorola MPC8245 integrated processor (see Figure 2). The ability of
the MPC184 to be a master on the 8xx or PCI bus allows the co-processor to ofoad the data movement
bottleneck normally associated with slave devices. The external processor accesses the MPC184 through its
device drivers using system memory for data storage. The MPC184 resides in the memory map of the
processor, therefore when an application requires cryptographic functions, it simply creates descriptors for
the MPC184 which dene the cryptographic function to be performed and the location of the data. The
MPC184’s mastering capability permits the host processor to set up a crypto-channel with a few short
register writes, leaving the MPC184 to perform reads and writes on system memory to complete the required
task.
Figure 1. MPC184 Connected to PowerQuicc 8xx Bus
Figure 2 shows the MPC184 communicating with an integrated processor such as the MPC8245.
Figure 2. MPC184 Connected to an integrated Host CPU such as the MPC8245
MPC860
MPC184
EEPROM
Main
I/O or Network
Interface
8xx Bus
Memory
PCI Local Bus
Memory Bus
Main
Memory
Network
Interface Card
MPC184
Network
Interface Card
MPC8245
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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