SNIU028D February 2016 – September 2020 UCD3138 , UCD3138064 , UCD3138064A , UCD3138128 , UCD3138A , UCD3138A64
Address FFFFFFFC
The System Software Interrupt Request Register contains a key sequence that triggers a software interrupt request to the CIM. Also, the Register contains an 8-bit data field.
15 | 8 | 7 | 0 |
SSKEY | SSDATA |
R/W-0000 0000 | R/W-0000 0000 |
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
15-8 | SSKEY | R/W | 0000 0000 | These bits represent the system software interrupt request key. These write-only bits are executable in both user and privilege modes. A 0x75 written to these bits initiates IRQ/FIQ interrupts. Data in this field is always read as zero. |
7-0 | SSDATA | R/W | 0000 0000 | These bits represent the system software interrupt data. The SSDATA bits provide an 8-bit field that can be used for passing messages into the system software interrupt. |