Table: Interrupt and Status Signals
describes the interrupt and status signals for the AXI Chip2Chip core.
Table 2-6:
Interrupt and Status Signals
Name
|
Direction
|
Description
|
axi_c2c_link_status_out
|
Output
|
Link Status: Asserted when Link Detect FSM is in the SYNC state. Deasserted when either the Master or Slave AXI Chip2Chip core is under reset or when the Link Detect FSM is not in the SYNC state.
|
axi_c2c_link_error_out
|
Output
|
Link Error Interrupt: Asserted when the AXI Chip2Chip Slave core is reset during normal operations. This signal is valid only in Master mode.
|
axi_c2c_multi_bit_error_out
|
Output
|
Multi-bit Error Interrupt: When asserted, this interrupt indicates multiple bits are received with errors in the Master or Slave AXI Chip2Chip core. For the SelectIO
™
interface, a multi-bit error is determined during deskew operations and indicates failure of those operations.
|
axi_c2c_config_error_out
|
Output
|
Configuration Error Interrupt: Applicable only
when Aurora is selected as the FPGA interface for
the core. When asserted, this interrupt indicates
that Link Detect FSM has failed due to a
configuration mismatch of Master and Slave AXI
Chip2Chip cores.
|
axi_c2c_m2s_intr_in
|
Input
|
Level Interrupt signaling from AXI Master to AXI Slave. The interrupt input should not toggle too frequently. It should stay high or low for a sufficient amount of time, for reliable transfer.
|
axi_c2c_s2m_intr_out
|
Output
|
Level Interrupt signaling from AXI Slave to AXI Master. The output values change only when a change in interrupt data is observed. If the interrupts on Slave instance changes too frequently, then Master instance may not be able to keep a track of it.
|
axi_c2c_m2s_intr_out
|
Output
|
Level Interrupt signaling from AXI Master to AXI Slave. The output values change only when a change in interrupt data is observed. If the interrupts on Master instance changes too frequently, then Slave instance may not be able to keep a track of it.
|
axi_c2c_s2m_intr_in
|
Input
|
Level Interrupt signaling from AXI Slave to AXI Master. The interrupt input should not toggle too frequently. It should stay high or low for a sufficient amount of time for reliable transfer.
|
Notes:
1.
All the output ports belonging to the interrupt and status signals are synchronous to the *_aclk clock domain.
|