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MT9072AB Datasheet(PDF) 96 Page - Zarlink Semiconductor Inc |
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MT9072AB Datasheet(HTML) 96 Page - Zarlink Semiconductor Inc |
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96 / 275 page  MT9072 Data Sheet 96 Zarlink Semiconductor Inc. 15.0 Interrupts The MT9072 has an extensive suite of interrupts consisting of 2 maskable interrupt vectors and 32 maskable interrupt status registers as shown in Figure 9 and an ST-BUS Analyzer Interrupt. The set bits in the 2 interrupt vectors identify which of the 32 interrupt status registers is responsible for the interrupt. Reading the corresponding interrupt status registers identifies the exact source of the interrupt. Any set bit in the interrupt vectors causes the IRQ pin to toggle low (providing the SPND bit is not set). Figure 9 - Interrupt Status Registers F R A M E R 1 Elastic Interrupt Status Register 036 Rx Sync Interrupt Status Register 034 Rx Line Status Register 035 Elastic Store Mask Status 046 Rx Sync Mask Status Register 044 RX Line Mask Status Register 045 Framer 0 Master LatchStatus Registers 023 - 026 FRAMER 0 INTA SPND F R A M E R 2 F R A M E R 3 F R A M E R 5 F R A M E R 6 F R A M E R 7 F R A M E R 4 4 Interrupt Vector 1 Status Register Address 910 Interrupt Vector 1 Mask Register Address 902 4 4 4 4 4 4 4 4 4 4 4 IRQ Pin Interrupt Vector 1 Interrupt Vector 2 Status Register Address 911 Interrupt Vector 2 Mask Register Address 903 Interrupt Vector 2 IRQ 1 IRQ 2 HDLC Status Register 033 HDLC Mask Status Register 043 ST-BUS Analyser Interrupt |
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