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AM3874 Datasheet(PDF) 205 Page - Texas Instruments |
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AM3874 Datasheet(HTML) 205 Page - Texas Instruments |
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205 / 361 page  AM3874, AM3871 www.ti.com SPRS695C – SEPTEMBER 2011 – REVISED DECEMBER 2013 7.5 Interrupts The device has a large number of interrupts to service the needs of its many peripherals and subsystems. The ARM Cortex-A8 and Media Controller are capable of servicing these interrupts. The following sections list the device interrupt mapping and multiplexing schemes. 7.5.1 ARM Cortex-A8 Interrupts The ARM Cortex-A8 Interrupt Controller (AINTC) is responsible for prioritizing all service requests from the System peripherals and generating either IRQs or FIQs to the Cortex-A8. The AINTC has the capability to handle up to 128 requests, and the priority of the interrupt inputs are programmable. Table 7-28 lists the interrupt sources for the AINTC. Note: For General-Purpose devices, the AINTC does not support the generation of FIQs to the ARM processor. For more details on ARM Cortex-A8 interrupt control, see the ARM Interrupt Controller (AINTC) chapter of the AM387x Sitara™ ARM Processors Technical Reference Manual (Literature Number: SPRUGZ7). Table 7-28. ARM Cortex-A8 Interrupt Controller (AINTC) Interrupt Sources Cortex-A8 ACRONYM SOURCE INTERRUPT NUMBER 0 EMUINT Cortex-A8 Emulation 1 COMMTX Cortex-A8 Emulation 2 COMMRX Cortex-A8 Emulation 3 BENCH Cortex-A8 Emulation 4 ELM_IRQ ELM 5 – Reserved 6 – Reserved 7 NMI NMIn Pin 8 – Reserved 9 L3DEBUG L3 Interconnect 10 L3APPINT L3 Interconnect 11 TINT8 TIMER8 12 EDMACOMPINT EDMA CC Completion 13 EDMAMPERR EDMA Memory Protection Error 14 EDMAERRINT EDMA CC Error 15 WDTINT0 Watchdog Timer 0 16 SATAINT SATA 17 USBSSINT USB Subsystem 18 USBINT0 USB0 19 USBINT1 USB1 20-27 – Reserved 28 SDINT1 MMC/SD1 29 SDINT2 MMC/SD2 30 I2CINT2 I2C2 31 I2CINT3 I2C3 32 GPIOINT2A GPIO2 A 33 GPIOINT2B GPIO2 B 34 USBWAKEUP USB Subsystem Wakeup 35 PCIeWAKEUP PCIe Wakeup 36 DSSINT HDVPSS 37 GFXINT SGX530 Copyright © 2011–2013, Texas Instruments Incorporated Power, Reset, Clocking, and Interrupts 205 Submit Documentation Feedback Product Folder Links: AM3874 AM3871 |
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