| 전자부품 데이터시트 검색엔진 |
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CS5920 데이터시트(PDF) 62 Page - Applied Micro Circuits Corporation |
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CS5920 데이터시트(HTML) 62 Page - Applied Micro Circuits Corporation |
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62 / 160 page ![]() S5920 – PCI Product Revision 1.01 – November 28, 2005 AMCC Confidential and Proprietary DS1596 62 Data Book INTERRUPT LINE REGISTER (INTLN) This register indicates the interrupt routing for the S5920 controller. The ultimate value for this register is system-architecture specific. For x86 based PCs, the values in this register correspond with the established interrupt numbers associated with the dual 8259 con- trollers used in those machines. In x86-based PC systems, the values of 0 to 15 correspond with the IRQ numbers 0 through 15, and the values from 16 to 254 are reserved. The value of 255 (the controller’s default power-up value) signifies either “unknown” or “no con- nection” for the system interrupt. This register is boot- loaded from the external boot memory or may be writ- ten by the PCI interface. Figure 22. Interrupt Line Register Register Name: Interrupt Line Address Offset: 3Ch Power-up value: FFh Boot-load: External nvRAM offset 7Ch Attribute: Read/Write Size: 8 bits FFh 0 7 |
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