Datasheet

AD9548 Data Sheet
Rev. E | Page 100 of 112
Table 138. IRQ Monitor for Reference Inputs
Address Bits Bit Name Description
0x0D06 [7] Ref AA new profile Indicates that Ref AA has switched to a new profile
[6] Ref AA validated Indicates that Ref AA has been validated
[5] Ref AA fault cleared Indicates that Ref AA has been cleared of a previous fault
[4] Ref AA fault Indicates that Ref AA has been faulted
[3] Ref A new profile Indicates that Ref A has switched to a new profile
[2] Ref A validated Indicates that Ref A has been validated
[1] Ref A fault cleared Indicates that Ref A has been cleared of a previous fault
[0] Ref A fault Indicates that Ref A has been faulted
0x0D07 [7] Ref BB new profile Indicates that Ref BB has switched to a new profile
[6] Ref BB validated Indicates that Ref BB has been validated
[5] Ref BB fault cleared Indicates that Ref BB has been cleared of a previous fault
[4] Ref BB fault Indicates that Ref BB has been faulted
[3] Ref B new profile Indicates that Ref B has switched to a new profile
[2] Ref B validated Indicates that Ref B has been validated
[1] Ref B fault cleared Indicates that Ref B has been cleared of a previous fault
[0] Ref B fault Indicates that Ref B has been faulted
0x0D08 [7] Ref CC new profile Indicates that Ref CC has switched to a new profile
[6] Ref CC validated Indicates that Ref CC has been validated
[5] Ref CC fault cleared Indicates that Ref CC has been cleared of a previous fault
[4] Ref CC fault Indicates that Ref CC has been faulted
[3] Ref C new profile Indicates that Ref C has switched to a new profile
[2] Ref C validated Indicates that Ref C has been validated
[1] Ref C fault cleared Indicates that Ref C has been cleared of a previous fault
[0]
Ref C fault
Indicates that Ref C has been faulted
0x0D09 [7] Ref DD new profile Indicates that Ref DD has switched to a new profile
[6] Ref DD validated Indicates that Ref DD has been validated
[5]
Ref DD fault cleared
Indicates that Ref DD has been cleared of a previous fault
[4] Ref DD fault Indicates that Ref DD has been faulted
[3] Ref D new profile Indicates that Ref D has switched to a new profile
[2] Ref D validated Indicates that Ref D has been validated
[1] Ref D fault cleared Indicates that Ref D has been cleared of a previous fault
[0] Ref D fault Indicates that Ref D has been faulted
Table 139. DPLL Status
Address Bits Bit Name Description
0x0D0A [7] Offset slew limiting The current closed-loop phase offset is rate limited.
[6] Phase build-out A phase build-out transition was made to the currently active reference.
[5] Freq lock The DPLL has achieved frequency lock.
[4] Phase lock The DPLL has achieved phase lock.
[3] Loop switching The DPLL is in the process of a reference switchover.
[2] Holdover The DPLL is in holdover mode.
[1] Active The DPLL is active (that is, operating in a closed-loop condition)
[0] Free running The DPLL is free running (that is, operating in an open-loop condition)