Altera RapidIO II MegaCore Function - Manual (Page 152)

6–14 Chapter 6: Software Interface
Physical Layer Registers
RapidIO II MegaCore Function August 2014 Altera Corporation
User Guide
OUT_ERR_STOP [16] RO
Indicates that the output port is in the Output Error Stopped state.
Output port has been stopped due to a transmission error and is trying
to recover.
The following conditions cause the output port to enter this state:
Received an unexpected packet-accepted control symbol
Received an unexpected packet-retry control symbol
Received a packet-not-accepted control symbol
To exit from this state, the port issues an input-status
link-request/input-status
(restart-from-error) control symbol.
The port waits for the link-response control symbol and exits the
Output Error Stopped state.
1'b0
RSRV [15:11] RO Reserved 5'b0
IN_RTY_STOP [10] RO
Input port is stopped due to a retry. This bit is set when the input port is
in the Input Retry Stopped state. When the receiver issues a packet-
retry
control symbol to its link partner, it enters the Input Retry
Stopped state. The receiver issues a packet-retry when sufficient
buffer space is not available to accept the packet for that specific
priority. The receiver continues in the Input Retry Stopped state until it
receives a restart-from-retry control symbol. 1'b0
IN_ERR_ENC [9] RW1C
Input port has encountered a transmission error. This bit is set if the
IN_ERR_STOP
bit is set. After it is set, this bit is cleared only when
software writes the value of 1 to it.
1'b0
Table 6–14. Port 0 Error and Status CSR—Offset: 0x158 (1) (Part 3 of 5)
Field Bits Access Function Default