32.8.4 Channel Pending Interrupt

An interrupt that handles several channels should consult the INTPEND register to find out which channel number has priority (ignoring/filtering each channel that has its own interrupt line). An interrupt dedicated to only one channel must not use the INTPEND register.

Table 32-5. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Name:	INTPEND
Offset:	0x10
Reset:	0x4000
Property:	-


Bit	15	14	13	12	11	10	9	8
	BUSY	READY					EVD	OVR
Access	R	R					R/W	R/W
Reset	0	1					0	0


Bit	7	6	5	4	3	2	1	0
				ID[4:0]
Access				R/W	R/W	R/W	R/W	R/W
Reset				0	0	0	0	0

Bit 15 – BUSY Busy

This bit is read '1' when the event on a channel selected by Channel ID field (ID) has not been handled by all the event users connected to this channel.

Bit 14 – READY Ready

This bit is read '1' when all event users connected to the channel selected by Channel ID field (ID) are ready to handle incoming events on this channel.

Bit 9 – EVD Channel Event Detected

This flag is set on the next CLK_EVSYS_APB cycle when an event is being propagated through the channel, and an interrupt request will be generated if CHINTENCLR/SET.EVD is '1'.

When the event channel path is asynchronous, the EVD bit will not be set.

Writing a '0' to this bit has no effect.

Writing a '1' to this bit will clear it. It will also clear the corresponding flag in the Channel n Interrupt Flag Status and Clear register (CHINTFLAGn) of this peripheral, where n is determined by the Channel ID bit field (ID) in this register.

Bit 8 – OVR Channel Overrun

This flag is set on the next CLK_EVSYS cycle after an overrun channel condition occurs, and an interrupt request will be generated if CHINTENCLR/SET.OVRx is '1'.

There are two possible overrun channel conditions:

One or more of the event users on channel selected by Channel ID field (ID) are not ready when a new event occurs
An event happens when the previous event on channel selected by Channel ID field (ID) has not yet been handled by all event users

When the event channel path is asynchronous, the OVR interrupt flag will not be set.

Writing a '0' to this bit has no effect.

Bits 4:0 – ID[4:0] Channel ID

These bits store the channel number of the highest priority.

When the bits are written, indirect access to the corresponding Channel Interrupt Flag register is enabled.