Texas Instruments TMS320TCI648x User Manual
Page 180
www.ti.com
SRIO Registers
Table 120. Mailbox-to-Queue Mapping Register Hn (RXU_MAP_Hn) Field Descriptions (continued)
Bit
Field
Value
Description
7–6
Reserved
0
These read-only bits return 0s when read.
5–2
QUEUE_ID
0–15
Queue identification number. This field selects which of the 16 RX buffer
queues is associated with mapper n.
1
PROMISCUOUS
Promiscuous access
0
Mapper n checks the incoming sourceID (access is restricted to one
sender). When determining which transactions to service, the mapper
checks the sourceID in addition to the mailbox and letter qualifications.
1
Mapper n ignores the incoming sourceID (access is available to any
sender). When determining which transactions to service, the mapper
checks only the mailbox and letter qualifications.
0
SEGMENT_MAPPING
Segment mapping
0
Single-segment messaging. Up to 64 mailboxes are available. All six
bits of the MAILBOX and MAILBOX_MASK fields of RXU_MAP_Ln are
valid.
1
Multi-segment messaging. Up to 4 mailboxes are available. Only the 2
LSBs of the MAILBOX and MAILBOX_MASK fields of RXU_MAP_Ln
are valid.
Serial RapidIO (SRIO)
180
SPRUE13A – September 2006