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XIO2000 데이터시트(PDF) 132 Page - Texas Instruments |
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XIO2000 데이터시트(HTML) 132 Page - Texas Instruments |
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132 / 150 page ![]() Memory-Mapped TI Proprietary Register Space 120 November 2005 SCPS097B 6.23 Serial IRQ Mode Control Register This register controls the behavior of the serial IRQ controller. This register is an alias for the serial IRQ mode control register in the classic PCI configuration space (offset E0h, see Section 4.72). See Table 6−12 for a complete description of the register contents. Device control memory window register offset: 48h Register type: Read-only, Read/Write Default value: 00h BIT NUMBER 7 6 5 4 3 2 1 0 RESET STATE 0 0 0 0 0 0 0 0 Table 6−12. Serial IRQ Mode Control Register Description BIT FIELD NAME ACCESS DESCRIPTION 7:4 RSVD R Reserved. Returns 0h when read. 3:2† START_WIDTH RW Start frame pulse width. Used to set the width of the start frame for a SERIRQ stream. 00 = 4 clocks (default) 01 = 6 clocks 10 = 8 clocks 11 = Reserved 1† POLLMODE RW Poll mode. This bit selects between continuous and quiet mode. 0 = Continuous mode (default) 1 = Quiet mode 0† DRIVEMODE RW Drive mode. This bit selects the behavior of the serial IRQ controller during the recovery cycle. 0 = Drive high (default) 1 = Tri-state † These bits are reset by a PCI Express reset (PERST), a GRST, or the internally-generated power-on reset. |
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