Interrupt and Event

Introduction W7500 contains

interrupt service and event service as below

• 25 interrupt request (IRQ) lines
• One NonMaskable Interrupt(NMI)
• One event signal

Interrupt assignments

IRQ/NMI	Device	Description	Address
NMI	Watchdog timer	Watchdog timer interrupt	0x0000_0008
IRQ[0]	SSP0	SSP0 global interrupt	0x0000_0040
IRQ[1]	SSP1	SSP1 global interrupt	0x0000_0044
IRQ[2]	UART0	UART0 global interrupt	0x0000_0048
IRQ[3]	UART1	UART1 global interrupt	0x0000_004C
IRQ[4]	UART2	UART2 global interrupt	0x0000_0050
IRQ[5]		global interrupt	0x0000_0054
IRQ[6]		global interrupt	0x0000_0058
IRQ[7]	GPIO0	GPIO0 global interrupt	0x0000_005c
IRQ[8]	GPIO1	GPIO1 global interrupt	0x0000_0060
IRQ[9]	GPIO2	GPIO2 global interrupt	0x0000_0064
IRQ[10]	GPIO3	GPIO3 global interrupt	0x0000_0068
IRQ[11]	DMA	DMA channel 1 ~ channel 5 interrupt	0x0000_006C
IRQ[12]	Dualtimer0	Dualtimer0 global interrupt	0x0000_0070
IRQ[13]	Dualtimer1	Dualtimer1 global interrupt	0x0000_0074
IRQ[14]	PWM0	PWM0 global interrupt	0x0000_0078
IRQ[15]	PWM1	PWM1 global interrupt	0x0000_007C
IRQ[16]	PWM2	PWM2 global interrupt	0x0000_0080
IRQ[17]	PWM3	PWM3 global interrupt	0x0000_0084
IRQ[18]	PWM4	PWM4 global interrupt	0x0000_0088
IRQ[19]	PWM5	PWM5 global interrupt	0x0000_008C
IRQ[20]	PWM6	PWM6 global interrupt	0x0000_0090
IRQ[21]	PWM7	PWM7 global interrupt	0x0000_0094
IRQ[22]	Reserved		0x0000_0098
IRQ[23]	ADC	ADC acquisition end interrupt	0x0000_009C
IRQ[24]	TCPIP	TCPIP global interrupt	0x0000_00A0
IRQ[25]	EXT_INT	External pin interrupt	0x0000_00A4
IRQ[26]	Reserved		0x0000_00A8
IRQ[27]	Reserved		0x0000_00AC
IRQ[28]	Reserved		0x0000_00B0
IRQ[29]	Reserved		0x0000_00B4
IRQ[30]	Reserved		0x0000_00B8
IRQ[31]	Reserved		0x0000_00BC

Event

W7500 is able to handle internal events in order to wake up the core(WFE). The wakeup event can be generated by

• When DMA process finished