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5.83 Port Local AckID Status CSR n (SP n_ACKID_STAT)
SRIO Registers
Each of the four ports is supported by a register of this type.
Figure 139. Port Local AckID Status CSR n (SP n_ACKID_STAT)
31-29 28-24 23-16
Reserved INBOUND_ACKID Reserved
R-0x00 RW-0x00 R-0x00
LEGEND: R = Read only; - n = value after reset
15-13 12-8 7-5 4-0
Reserved OUTSTANDING_ACKID Reserved OUTBOUND_ACKID
R-0x00 RW-0x00 R-0x00 RW-0x00
LEGEND: R = Read only; - n = value after reset
Table 113. Port Local AckID Status CSR n (SP n_ACKID_STAT) Field Descriptions
Bit Field Value Description
31-29 Reserved Reserved
28-24 INBOUND_ACKI Input port next expected ackID value
D
23-13 Reserved Reserved
12-8 OUTSTANDING_ Output port unacknowledged ackID status. Next expected acknowledge control symbol ackID field
ACKID that indicates the ackID value expected in the next received acknowledge control symbol.
7-5 Reserved Reserved
4-0 OUTBOUND_AC Output port next transmitted ackID value. Software writing this value can force retransmission of
KID outstanding unacknowledged packets in order to manually implement error recovery.
SPRU976 March 2006 Serial RapidIO (SRIO) 185
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