Texas TMS320C645X Manual Do Utilizador
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SRIO Registers
Table 115. Port Control CSR n (SPn_CTL) Field Descriptions (continued)
Bit
Field
Value
Description
21
INPUT_PORT_E
Input port receive enable
NABLE
0b
Port is stopped and only enabled to route or respond I/O logical MAINTENANCE packets,
depending upon the functionality of the processing element. Other packets generate
packet-not-accepted control symbols to force an error condition to be signaled by the sending
device. Control symbols are not affected and are received and handled normally.
depending upon the functionality of the processing element. Other packets generate
packet-not-accepted control symbols to force an error condition to be signaled by the sending
device. Control symbols are not affected and are received and handled normally.
1b
Port is enabled to respond to any packet
20
ERROR_CHECK
This bit disables all RapidIO transmission error checking. Device behavior when error checking and
_DISABLE
recovery is disabled and an error condition occurs is undefined.
0b
Error checking and recovery is enabled
Error checking and recovery is disabled
1b
19
Send incoming Multi cast-event control symbols to this port (multiple port devices only)
MULTICAST_PARTICIPANT
18-4
Reserved
Reserved
3
STOP_PORT_FL
When set, this bit causes the port to set the Port Error bit in the Port n Error and Status CSR and
D_ENC_ENABLE
stop attempting to send packets to the connected device when the Output Failed-encountered bit is
set. Packets are discarded if the Drop Packet Enable bit is set. When cleared, the port continues to
attempt to transmit packets to the connected device if the Output Failed-encountered bit is set.
set. Packets are discarded if the Drop Packet Enable bit is set. When cleared, the port continues to
attempt to transmit packets to the connected device if the Output Failed-encountered bit is set.
2
DROP_PACKET_
When set, this bit allows the output port to drop packets that are acknowledged with a
ENABLE
packet-not-accepted control symbol when the error failed threshold is exceeded. If the port "heals",
and the current error rate falls below the failed threshold, the output no longer drops packets
(switch devices only). When cleared, the output port continues to try to transmit packets that have
been rejected due to transmission errors
and the current error rate falls below the failed threshold, the output no longer drops packets
(switch devices only). When cleared, the output port continues to try to transmit packets that have
been rejected due to transmission errors
1
PORT_LOCKOU
Port Lockout: When cleared, this port is enabled to issue any packets. When set, this port is
T
stopped and is not enabled to issue or receive any packets; the input port can still follow the
training procedure and can still send and respond to link-requests; all received packets return
packet-not-accepted control symbols to force an error condition to be signaled by the sending
device.
training procedure and can still send and respond to link-requests; all received packets return
packet-not-accepted control symbols to force an error condition to be signaled by the sending
device.
0
PORT_TYPE
Port type. This indicates the port type, parallel or serial (read only).
0b
Parallel port
1b
Serial port
SPRU976 – March 2006
Serial RapidIO (SRIO)
189