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XIO2001IPNP 数据表(PDF) 87 Page - Texas Instruments |
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XIO2001IPNP 数据表(HTML) 87 Page - Texas Instruments |
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87 / 131 page  XIO2001 www.ti.com SCPS212D – MAY 2009 – REVISED JANUARY 2010 4.74 Serial IRQ Status Register This register indicates when a level mode IRQ is signaled on the serial IRQ stream. After a level mode IRQ is signaled, a write-back of 1b to the asserted IRQ status bit re-arms the interrupt. IRQ interrupts that are defined as edge mode in the serial IRQ edge control register are not reported in this status register. See Table 4-48 for a complete description of the register contents. PCI register offset: E4h Register type: Read/Clear Default value: 0000h BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 RESET STATE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Table 4-48. Serial IRQ Status Register Description BIT FIELD NAME ACCESS DESCRIPTION IRQ 15 asserted. This bit indicates that the IRQ15 has been asserted. 15(1) IRQ15 RCU 0 = Deasserted 1 = Asserted IRQ 14 asserted. This bit indicates that the IRQ14 has been asserted. 14(1) IRQ14 RCU 0 = Deasserted 1 = Asserted IRQ 13 asserted. This bit indicates that the IRQ13 has been asserted. 13(1) IRQ13 RCU 0 = Deasserted 1 = Asserted IRQ 12 asserted. This bit indicates that the IRQ12 has been asserted. 12(1) IRQ12 RCU 0 = Deasserted 1 = Asserted IRQ 11 asserted. This bit indicates that the IRQ11 has been asserted. 11(1) IRQ11 RCU 0 = Deasserted 1 = Asserted IRQ 10 asserted. This bit indicates that the IRQ10 has been asserted. 10(1) IRQ10 RCU 0 = Deasserted 1 = Asserted IRQ 9 asserted. This bit indicates that the IRQ9 has been asserted. 9(1) IRQ9 RCU 0 = Deasserted 1 = Asserted IRQ 8 asserted. This bit indicates that the IRQ8 has been asserted. 8(1) IRQ8 RCU 0 = Deasserted 1 = Asserted IRQ 7 asserted. This bit indicates that the IRQ7 has been asserted. 7(1) IRQ7 RCU 0 = Deasserted 1 = Asserted (1) These bits are reset by a PCI Express reset (PERST), a GRST, or the internally-generated power-on reset. Copyright © 2009–2010, Texas Instruments Incorporated Classic PCI Configuration Space 87 Submit Documentation Feedback Product Folder Link(s): XIO2001 |
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