Artesyn ATCA-7480, Installation And Use Manual, Page: 150 / 330

Maps and Registers
ATCA-7480 Installation and Use (6806800T17A )
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5.1.15.1 NMI Generation Register
IPMC can initiate a NMI high pulse writing 0xA5 to this register. The minimum pulse width of
the NMI is 175
μ s.
5.1.15.2 NMI Interrupt Status Register
When the IPMC has generated a NMI pulse, the host can identify this event reading the register
below. The host needs to clear this flag.
5.1.16 Interrupt Control and Status Registers
The interrupt status registers indicate events of the interrupt input signals. When an interrupt
event occurred, the corresponding status bit is read 1. Writing 1 of the corresponding bit clears
the bit.
Table 5-66 NMI Generation Register
Address Offset: 0x20
Bit Description Default Access
7:0 NMI pulse generation. Minimum pulse width is 175 μ s:
0xA5: Generate NMI pulse
all other values are ignored
- IPMC: w
Table 5-67 NMI Interrupt Status Register
Address Offset: 0x20
Bit Signal/Group Description Default Access
0 PCH_NMI NMI pulse triggered by IPMC. PWR_GOOD: 0 LPC: r/1wc
7:1 - Reserved 0 r