Visible to Intel only — GUID: bhc1447657963027
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1.3.1.2.2. FPGA Core Control and Status PIO
The FPGA core control and status PIO modules provide general purpose I/O access to and from the ARM® HPS for elements inside the FPGA core fabric. The FPGA control PIO is a 32-bit output signal from the ARM® HPS to the FPGA core fabric. The FPGA status PIO is a 32-bit input signal from the FPGA core fabric to the ARM® HPS. The signal connectivity is set at the top level HDL file. The tables below describe the signal connectivity for the FPGA control and status registers.
Bit |
Signal |
---|---|
0 |
RX serial loopback enable for lane 0 (Link 0) |
1 |
RX serial loopback enable for lane 1 (Link 0) |
2 |
RX serial loopback enable for lane 2 (Link 0) |
3 |
RX serial loopback enable for lane 3 (Link 0) |
4-30 |
RX serial loopback enable for subsequent links, if present |
31 |
Sysref |
Bit |
Signal |
---|---|
0 |
Core PLL locked |
1 |
TX transceiver ready (Link 0) |
2 |
RX transceiver ready (Link 0) |
3 |
Test pattern checker data error (Link 0) |
4-31 |
TX transceiver ready, RX transceiver ready, and test pattern checker data error signals for subsequent links, if present |