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EM341-RTR 数据表(PDF) 53 Page - Silicon Laboratories |
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EM341-RTR 数据表(HTML) 53 Page - Silicon Laboratories |
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53 / 237 page  EM341 54 Rev 1.0 In some cases, it may be useful to assign IRQC or IRQD to an input also in use by a peripheral, for example to generate an interrupt from the slave select signal (nSSEL) in an SPI slave mode interface. Refer to "9. Interrupt System" on page 100 for further information regarding the EM341 interrupt system. 7.9. Debug Control and Status Two GPIO registers are largely concerned with debugger functions. GPIO_DBGCFG can disable debugger operation, but has other miscellaneous control bits as well. GPIO_DBGSTAT, a read-only register, returns status related to debugger activity (GPIO_FORCEDBG and GPIO_SWEN), as well a flag (GPIO_BOOTMODE) indicating whether nBOOTMODE was asserted at the last power-on or nRESET-based reset. Table 7.4. IRQC/D GPIO Selection GPIO_IRQxSEL GPIO GPIO_IRQxSEL GPIO GPIO_IRQxSEL GPIO 0 PA0 8 PB0 16 PC0 1 PA1 9 PB1 17 PC1 2 PA2 10 PB2 18 PC2 3 PA3 11 PB3 19 PC3 4 PA4 12 PB4 20 PC4 5 PA5 13 PB5 21 PC5 6 PA6 14 PB6 22 PC6 7 PA7 15 PB7 23 PC7 |
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