Visible to Intel only — GUID: lro1402071736219
Ixiasoft
Visible to Intel only — GUID: lro1402071736219
Ixiasoft
36.2.1. Avalon® -MM Compliant CSR Registers
Each ILC has rows of status registers each being 32 bits in length. The last five rows of CSR registers corresponding to address 0x20 to 0x24 are fixed regardless of the number of IRQ port count configured through the Platform Designer GUI. The Address 0x0 to 0x1F is reserved to store the latency value which depends on the number of IRQ port configured. For example, if you configure the instance to have only five counters, then only addressess 0x0 to 0x4 return a valid value when you try to read from it. When the IP user tries to read from an invalid address, the IP returns binary ‘0’ value.
Word Address Offset | Register/ Queue Name | Attribute |
---|---|---|
0x0 | IRQ_0 Latency Data Registers | Read access only |
0x1 | IRQ_1 Latency Data Registers | Read access only |
... | ... | ... |
0x1F | IRQ_31 Latency Data Registers | Read access only |
0x20 | Control Registers | Read and Write access on LSB and Read only for the remaining bits |
0x21 | Frequency Registers | Read access only |
0x22 | Counter Stop Registers | Read and Write access |
0x23 | Read data Valid Registers | Read access only |
0x24 | IRQ Active Registers | Read access only |