Artesyn ATCA-7365 Installation and Use (May 2014) - Manual (Page 205)

Maps and Registers
ATCA-7365 Installation and Use (6806800K65M) 205
A write access to the RTM SPI Address/Command Register with the Command Bit 1 (Read)
starts a SPI read transaction. The value of the RTM SPI Read Register contains the data read
from the SPI device.
6.4.12 Interrupt Control and Status Registers
The interrupt status registers indicate the status of the interrupt input signals. They are read
only registers. When an interrupt is active the corresponding status bit is read 1. Write access
to these register bits does not have any impact.
6.4.12.1 RTM Interrupt Status Register
The RTM Interrupt Status Register will be located in the RTM SPI address space. The host can
access the RTM register using the RTM SPI Master Interface.
No RTM interrupt sources are defined yet.
6.4.12.2 External Interrupt Status Register
Table 6-58 RTM SPI Read Register
Address Offset: 0x19
Bit Description Default Access
7:0 RTM SPI read data - LPC: r
Table 6-59 External Interrupt Status Register
Address Offset: 0x20
Bit Signal 1 Description Default Access
0 IPMC2HOST_INT_ IPMC signals interrupt Ext. LPC: r
1 LM75_INT_ Interrupt input from payload Temp sensor Ext. LPC: r
2 SFMEM_IRQ_ Interrupt from SFMEM Module Ext. LPC: r
3 THERM_SEN0 IRQ request from 82599 Thermsen0 Ext. LPC: r
4 THERM_SEN1 IRQ request from 82599 Thermsen1 Ext. LPC: r