Altera Arria 10 Avalon-ST - Manual (Page 108)

Signal Name Direction Description
cfg_par_err Output When asserted for a single cycle, indicates that a parity error was
detected in a TLP that was routed to internal Configuration
Space or to the Configuration Space Shadow Extension Bus. This
error is logged as an uncorrectable internal error in the VSEC
registers. For more information, refer to Uncorrectable Internal
Error Status Register. If this error occurs, you must reset the core
because parity errors can put the Hard IP in an unknown state.
cfg_par_err Output Indicates that a parity error in a TLP routed to the internal
Configuration Space or to the Configuration Space Shadow
Extension Bus. This error is also logged in the Vendor Specific
Extended Capability internal error register. You must reset the
Hard IP if this event occurs.
LMI Signals
LMI interface is used to write log error descriptor information in the TLP header log registers. The LMI
access to other registers is intended for debugging, not normal operation.
Figure 6-34: Local Management Interface
Configuration Space
128 32-bit registers
(4 KBytes)
LMI
8 lmi_dout
lmi_ack
12 lmi_addr
8 lmi_din
lmi_rden
lmi_wren
pld_clk
Hard IP for PCIe
The LMI interface is synchronized to
pld_clk
and runs at frequencies up to 250 MHz. The LMI address is
the same as the Configuration Space address. The LMI interface provides the same access to Configura‐
tion Space registers as Configuration TLP requests. Register bits have the same attributes, (read only,
read/write, and so on) for accesses from the LMI interface and from Configuration TLP requests. The 32-
bit read and write data is driven, LSB to MSB over 4 consecutive cycles.
Note: You can also use the Configuration Space signals to read Configuration Space registers. For more
information, refer to Transaction Layer Configuration Space Signals.
6-42 LMI Signals
UG-01145_avst
2015.05.04
Altera Corporation Interfaces and Signal Descriptions
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