IDT CPS Registers
Revision 1.5
Integrated Device Technology, Inc.
CPS-16/12/8 User Manual
10 - 20
July 10, 2012
10.5.1 Port 0 Link Maintenance Request Command and Status Register
(PORT_0_LINK_MAINT_REQ_CSR)
10.5.2 Port 0 Link Maintenance Response Command and Status Register
(PORT_0_LINK_MAINT_RESP_CSR)
Table 10.25 PORT_0_LINK_MAINT_REQ_CSR 0x000140
Bit
Field Name
Type
Reset
Value
Comment
2 - 0
Command
R/W
0b000
0b011 = Reset device
0b100 = Input status
0b000 - 0b010 = Reserved
0b101 - 0b111 = Reserved
See RIO part 6 table 3-6 (rev 1.3)
31 - 3
Reserved
Table 10.26 PORT_0_LINK_MAINT_RESP_CSR 0x000144
Bit
Field Name
Type
Reset
Value
Comment
4 - 0
LINK_STATUS
RO
0b00000
Link status field from the link response
control symbol
9 - 5
ACKID_STATUS
RO
0b00000
ackID status field from the link response
control symbol
30 - 10
Reserved
31
RESPONSE_VALID
RO
0b0
If the previous link request causes a link
response, then this bit indicates that the
link response has been received and the
status fields are valid. If the link request
did not cause a link response, this bit indi-
cates that the link request has been trans-
mitted.
This bit clears on read.