AMD M56 Reference Manual page 160

VIP/I2C Registers
I2C_INT_AK (W)
Reserved
VIPH_INT (R)
General Interrupt Status register.
These fields can be polled and acknowledged even if interrupts are disabled, or the respective fields are masked in the GEN_INT_CNTL register.
M56 Register Reference Manual
2-154
17 0x0 I2C interrupt acknowledge/reset.
0=No effect
1=Clear status
20 0x0
24 0x0 VIP host port interrupt.
0=No event
1=Event has occurred, interrupting if enabled
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