iir
Returns interrupt identification and FIFO enable/disable when read.
| Module Instance | Base Address | Register Address |
|---|---|---|
| uart0 | 0xFFC02000 | 0xFFC02008 |
| uart1 | 0xFFC03000 | 0xFFC03008 |
Offset: 0x8
Access: RO
Important: To prevent indeterminate
system behavior, reserved areas of memory must not be accessed by software or
hardware. Any area of the memory map that is not explicitly defined as a register
space or accessible memory is considered reserved.
| Bit Fields | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
Reserved |
|||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved |
fifoen RO 0x0 |
Reserved |
id RO 0x1 |
||||||||||||
iir Fields
| Bit | Name | Description | Access | Reset | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7:6 | fifoen | This is used to indicate whether the FIFO's are enabled or disabled.
|
RO | 0x0 | ||||||||||||||
| 3:0 | id | This indicates the highest priority pending interrupt.
|
RO | 0x1 |