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ST92F124 数据表(PDF) 111 Page - STMicroelectronics |
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ST92F124 数据表(HTML) 111 Page - STMicroelectronics |
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111 / 429 page ![]() 111/429 ST92F124/F150/F250 - INTERRUPTS INTERRUPT REGISTERS (Cont’d) INTERRUPT PRIORITY LEVEL REGISTER LOW (SIPLRL) R253 - Read/Write Register Page: Page 60 Reset Value : 1111 1111 Bits 7:6 = PL2H, PL1H: INTH0,H1 Priority Level. Bits 5:4 = PL2G, PL1G: INTG0, G1 Priority Level. Bits 3:2 = PL2F, PL1F: INTF0, F1 Priority Level. Bits 1:0 = PL2E, PL1E: INTE0, E1 Priority Level. These bits are set and cleared by software. The priority is a three-bit value. The LSB is fixed by hardware at 0 for even channels and at 1 for odd channels Table 22. PL Bit Assignment Table 23. PL bit Meaning INTERRUPT FLAG REGISTER HIGH (SFLAGRH) R254 - Read Only Register Page: 60 Reset Value : 0000 0000 Bit 0 = OUFI0 : Overrun flag for INTI0 This bit is set and cleared by hardware. It indicates if more than one interrupt event occured on INTI0 before the IPI0 bit in the SIPRH register has been cleared. 0 : No overrun 1 : Overrun has occurred on INTI0 INTERRUPT FLAG REGISTER LOW (SFLAGRL) R255 - Read Only Register Page: 60 Reset Value : 0000 0000 Bits 7:0 = OUFxx : Overrun flag for channel xx These bits are set and cleared by hardware. They indicate if more than one interrupt event occurs on the associated channel before the pending bit in the SIPRL register has been cleared. 0 : No overrun 1 : Overrun has occurred on channel xx 70 PL2H PL1H PL2G PL1G PL2F PL1F PL2E PL1E Interrupt Channel Pair 3-bit Priority Level INTH0 INTH1 PL2H PL2H PL1H PL1H 0 1 INTG0 INTG1 PL2G PL2G PL1G PL1G 0 1 INTF0 INTF1 PL2F PL2F PL1F PL1F 0 1 INTE0 INTE1 PL2E PL2E PL1E PL1E 0 1 PL2x PL1x Hardware bit Priority 00 0 1 0 (Highest) 1 01 0 1 2 3 10 0 1 4 5 11 0 1 6 7 (Lowest) Interrupt Channel Pair Priority Level INTE0 INTE1 PL2E PL2E PL1E PL1E 0 1 INTF0 INTF1 PL2F PL2F PL1F PL1F 0 1 INTG0 INTG1 PL2G PL2G PL1G PL1G 0 1 INTH0 INTH1 PL2H PL2H PL1H PL1H 0 1 70 -- - - --- OUFI0 70 OUFH1 OUFH0 OUFG1 OUFG0 OUFF1 OUFF0 OUFE1 OUFE0 9 |
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