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PC87591L Datasheet(PDF) 339 Page - National Semiconductor (TI) |
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PC87591L Datasheet(HTML) 339 Page - National Semiconductor (TI) |
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339 / 437 page  6.0 Host-Controlled Modules and Host Interface (Continued) Revision 1.07 339 www.national.com Table 52. Interrupt Configuration Registers Table 53. DMA Configuration Registers Table 54. Special Logical Device Configuration Registers Index Register Name Description 7016 Interrupt Number and Wake-Up on IRQ Enable Indicates selected interrupt number. Bits 7-5: Reserved. Bit 4: Enables wake-up on the IRQ of the logical device. When enabled, IRQ as- sertion triggers a wake-up event. 0: Disabled (default) 1: Enabled Bits 3-0: select the interrupt number. A value of 1 selects IRQ1, a value of 2 selects IRQ2, etc. (up to IRQ15). A value of 0 disables this interrupt. 7116 Interrupt Request Type Select Indicates the type and level of the interrupt request number selected in the previous register. Bits 7-2: Reserved. Bit 1: Polarity of interrupt request selected in previous register 0: Low polarity 1: High polarity Bit 0: Type of interrupt request selected in previous register 0: Edge 1: Level Index Register Name Description 7416 DMA Channel Select 0 Indicates selected DMA channel for DMA 0 of the logical device (0: The first DMA channel if more than one DMA channel is used). Bits 7-3: Reserved. Bits 2-0: Select the DMA channel for DMA 0. The valid choices are 0-3, where: ● A value of 0 selects DMA channel 0, 1 selects channel 1, etc. ● A value of 4 indicates that no DMA channel is active. ● The values 5-7 are reserved. 7516 DMA Channel Select 1 Indicates selected DMA channel for DMA 1 of the logical device (1: The second DMA channel if more than one DMA channel is used). Bits 7-3: Reserved. Bits 2-0: Select the DMA channel for DMA 1. The valid choices are 0-3, where: ● A value of 0 selects DMA channel 0, 1 selects channel 1, etc. ● A value of 4 indicates that no DMA channel is active. ● The values 5-7 are reserved. Index Register Name Description F016-FE16 Logical Device Configuration Special (vendor-defined) configuration options |
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