Altera RapidIO II MegaCore Function User Manual
Page 151
Chapter 6: Software Interface
6–13
Physical Layer Registers
August 2014
Altera Corporation
RapidIO II MegaCore Function
User Guide
IDLE_SEQUENCE
[29]
RO
Indicates which Idle control symbol is active.
1’b0: IP core uses IDLE1 control symbols.
1’b1: IP core uses IDLE2 control symbols.
The RapidIO II IP core currently supports only the IDLE2 sequence, so
this bit always has the value of 1.
1'b1
RSRV
[28]
RO
Reserved
1'b0
FLOW_CTRL_MODE
[27]
RO
Indicates which flow control mode is active.
1’b0: Receiver-controlled flow control is active.
1’b1: Transmitter-controlled flow control is active.
1'b0
OUT_PKT_DROPD
[26]
RW1C
Output port has discarded a packet because the failed error threshold in
the Port 0 Error Rate Threshold register has been reached. After
it is set, this bit is cleared only when software writes the value of 1 to it.
1'b0
OUT_FAIL_ENC
[25]
RW1C
Output port has encountered a failed condition: the failed error
threshold in the Port 0 Error Rate Threshold register (
) has been reached. After it is set, this bit is cleared only
when software writes the value of 1 to it.
1'b0
OUT_DGRD_ENC
[24]
RW1C
Output port has encountered a degraded condition: the degraded error
threshold in the Port 0 Error Rate Threshold register (
) has been reached. After it is set, this bit is cleared only
when software writes the value of 1 to it.
1'b0
RSRV
[23:21]
RO
Reserved
3'b0
OUT_RTY_ENC
[20]
RW1C
Output port has encountered a retry condition. In all cases, this
condition is caused by the port receiving a packet-retry control
symbol. This bit is set if the OUT_RTY_STOP bit is set.
1'b0
OUT_RETRIED
[19]
RO
Output port has received a packet-retry control symbol and cannot
make forward progress. This bit is cleared when a packet-accepted
or packet-not-accepted control symbol is received.
1'b0
OUT_RTY_STOP
[18]
RO
Indicates that the output port is in the Output Retry Stopped state.
Output port has been stopped due to a retry and is trying to recover.
When a port receives a packet_retry control symbol, it enters the
Output Retry Stopped state. In this state, the port transmits a
restart-from-retry
control symbol to its link partner. The link
partner exits the Input Retry Stopped state and normal operation
resumes. The port exits the Output Retry Stopped state.
1'b0
OUT_ERR_ENC
[17]
RW1C
Output port has encountered a transmission error and has possibly
recovered from it. This bit is set when the OUT_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 2 of 5)
Field
Bits
Access
Function
Default