双处理器结构既提供了程序运行的通用处理器,又提供了用于通信用处的特殊通信处理器(CPM).
32位PowerPC结构特点
名称 | 内存物理地址 | 备注 |
SDRAM | 0x00000000~0x7FFFFFFF | |
PCI | 0x80000000~0xEF5FFFFF | |
Internal Peripherals | 0xEF600000~0xEFFFFFFF | |
UART | ..... | |
..... | ..... | |
External Peripherals | 0xF0000000~0xFF7FFFFF | |
NVRAM/RTC | 0xF0000000~0xF0001FFF | (8K)下画线为片选 |
Keybord/Mouse | 0xF0100000~0xF0100001 | 下画线为片选 |
FPGA_INT_ST.. | 0xF0300000~0xF0300000 | 下画线为片选 |
FPGA_INT_EN.. | 0xF0300001~0xF0300001 | 下画线为片选 |
Socket Flash | 0xFFF80000~0xFFFFFFFF | 512K |
SRAM | 0xFFF00000~0xFFF7FFFF | 512K(可通过Swich与Socket Flash 切换) |
Priority | Exception Type | Cause |
1 | Development port | nonmaskable interrupt Signal from the development port |
2 | System reset | interrupt IRQ0 assertion |
3 | Instruction-related exceptions | Instruction processing |
4 | Peripheral breakpoint request or development port maskable interrupt | Breakpoint signal from any peripheral |
5 | External interrupt (masked if MSR[EE] = 0) | Signal from the interrupt controller |
6 | Decrementer interrupt(masked if MSR[EE] = 0) | Decrementer request |
中断 | 极性 | 触发方式 | 中断源 |
0 | 正(High) | 电平(Level) | UART 0 |
1 | 正(High) | 电平(Level) | UART 1 |
2 | 正(High) | 电平(Level) | IIC |
3 | 正(High) | 电平(Level) | External Master |
4 | 正(High) | 电平(Level) | PCI |
5 | 正(High) | 电平(Level) | DMA Channel 0 |
6 | 正(High) | 电平(Level) | DMA Channel 1 |
7 | 正(High) | 电平(Level) | DMA Channel 2 |
8 | 正(High) | 电平(Level) | DMA Channel 3 |
9 | 正(High) | 电平(Level) | MAL Wake UP |
10 | 正(High) | 电平(Level) | MAL SERR |
11 | 正(High) | 电平(Level) | MAL TXEOB |
12 | 正(High) | 电平(Level) | MAL RXEOB |
13 | 正(High) | 电平(Level) | MAL TXDE |
14 | 正(High) | 电平(Level) | MAL TXDE |
15 | 正(High) | 电平(Level) | Ethernet |
16 | 正(High) | 电平(Level) | External PCI SERR |
17 | 正(High) | 电平(Level) | ECC Correctalbe Error |
18 | 正(High) | 电平(Level) | PCI Power Management |
.... | Reserved | ||
25 | Programmable | Programmable | External IRQ 0 |
26 | Programmable | Programmable | External IRQ 1 |
27 | Programmable | Programmable | External IRQ 2 |
28 | Programmable | Programmable | External IRQ 3 |
29 | Programmable | Programmable | External IRQ 4 |
30 | Programmable | Programmable | External IRQ 5 |
31 | Programmable | Programmable | External IRQ 6 |
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