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參數(shù)資料
| 型號(hào)： | PowerPC 405CR |
| 廠商： | IBM Microeletronics |
| 英文描述： | 32-bit RISC Embedded Controllers(32位RISC結(jié)構(gòu)嵌入式控制器) |
| 中文描述： | 32位RISC嵌入式控制器（32位的RISC結(jié)構(gòu)嵌入式控制器） |
| 文件頁數(shù)： | 11/42頁 |
| 文件大?。?/td> | 565K |
| 代理商： | POWERPC 405CR |
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PowerPC 405CR Embedded Controller Data Sheet
11
General Purpose IO (GPIO) Controller
Controller functions and GPIO registers are programmed and accessed via memory-mapped OPB bus
master accesses.
All GPIOs are pin-shared with other functions. DCRs control whether a particular pin that has GPIO
capabilities acts as a GPIO or is used for another purpose. Twenty-three GPIOs are multiplexed with:
- 7 of 8 chip selects
- All seven external interrupts
- All nine instruction trace pins
Each GPIO output is separately programmable to emulate an open drain driver (i.e., drives to zero, three-
stated if output bit is 1).
Universal Interrupt Controller (UIC)
The Universal Interrupt Controller (UIC) provides the control, status, and communications necessary between
the various sources of interrupts and the local PowerPC processor.
Features include:
Supports 7 external and 10 internal interrupts
Edge triggered or level-sensitive
Positive or negative active
Non-critical or critical interrupt to PPC405 processor core
Programmable critical interrupt priority ordering
Programmable critical interrupt vector for faster vector processing
JTAG
IEEE 1149.1 Test Access Port
IBM RISCWatch Debugger support
JTAG Boundary Scan Description Language (BSDL)
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