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80960JD データシート(PDF) 16 Page - Intel Corporation |
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80960JD データシート(HTML) 16 Page - Intel Corporation |
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16 / 61 page ![]() 12 PRELIMINARY 80960JD Table 5. Pin Description — Interrupt Unit Signals NAME TYPE DESCRIPTION XINT7:0 I A(E/L) EXTERNAL INTERRUPT pins are used to request interrupt service. The XINT7:0 pins can be configured in three modes: Dedicated Mode: Each pin is assigned a dedicated interrupt level. Dedicated inputs can be programmed to be level (low) or edge (falling) sensitive. Expanded Mode: All eight pins act as a vectored interrupt source. The interrupt pins are level sensitive in this mode. Mixed Mode: The XINT7:5 pins act as dedicated sources and the XINT4:0 pins act as the five most significant bits of a vectored source. The least significant bits of the vectored source are set to 010 2 internally. Unused external interrupt pins should be connected to V CC. NMI I A(E) NON-MASKABLE INTERRUPT causes a non-maskable interrupt event to occur. NMI is the highest priority interrupt source and is falling edge-triggered. If NMI is unused, it should be connected to VCC. |
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