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7. I
2
C Interface > Interrupt Handling
174
Tsi574 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
7.10
Interrupt Handling
I
2
C interrupts are generated as shown in
2
C event detected by the I
2
C Interface sets a bit
in the
to a 1 to assert the interrupt. This bit is then anded with the
corresponding bit in the
to determine if that interrupt is enabled. Any
enabled interrupt status bit asserts the interrupt output signal to the Interrupt Controller. This signal
stays asserted until all enabled bits in the interrupt status register are cleared.
Figure 37: I
2
C Interrupt Generation
The interrupt status bits are cleared by a write-one-to-clear operation to the Interrupt Status Register,
provided the interrupt status register has first been read. For test purposes, bits in the Interrupt Status
Register can also be set by a write-one-to-set operation to the
A bit that is set in the Interrupt Status Register is cleared by a write-1-to-clear operation only
after the register has first been read, and then providing another event that would result the
interrupt condition has not occurred since the read of the register (see
.
Bit N
I2C_INT_STAT
Bit N
I2C_INT_ENABLE
Bit 0 Enable
Write 1 to bit N in
AND
Event Asserted
Write 1 to bit N in I2C_INT_STAT to CLEAR
OR
OR
Interrupt Signal to
Interrupt Controller
AND
AND
Bit 31 Enable
I2C_INT_SET to SET
by Logic SETS
Содержание IDT Tsi574
Страница 1: ...IDT Tsi574 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 100: ...4 Internal Switching Fabric Packet Queuing 100 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 224: ...11 Signals Pinlist and Ballmap 224 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 490: ...B Clocking P_CLK Programming 490 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 512: ...Index 512 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...