Datasheet

Data Sheet AD9558
Rev. B | Page 91 of 104
Table 96. IRQ Clearing for History Update, Frequency Limit, and Phase Slew Limit
Address Bits Bit Name Description
0x0A07
[7:5] Reserved Reserved
4
History updated
Clears history updated IRQ
3 Frequency unclamped Clears frequency unclamped IRQ
2
Frequency clamped Clears frequency clamped IRQ
1
Phase slew unlimited
Clears phase slew unlimited IRQ
0 Phase slew limited Clears phase slew limited IRQ
Table 97. IRQ Clearing for Reference Inputs
Address Bits Bit Name Description
0x0A08
7 Reserved Reserved
6
REFB validated Clears REFB validated IRQ
5
REFB fault cleared Clears REFB fault cleared IRQ
4
REFB fault Clears REFB fault IRQ
3
Reserved Reserved
2
REFA validated Clears REFA validated IRQ
1
REFA fault cleared
Clears REFA fault cleared IRQ
0 REFA fault Clears REFA fault IRQ
0x0A09
7 Reserved Reserved
6
REFD validated
Clears REFD validated IRQ
5 REFD fault cleared Clears REFD fault cleared IRQ
4
REFD fault Clears REFD fault IRQ
3
Reserved
Reserved
2 REFC validated Clears REFC validated IRQ
1
REFC fault cleared Clears REFC fault cleared IRQ
0
REFC fault Clears REFC fault IRQ
Table 98. Incremental Phase Offset Control
Address Bits Bit Name Description
0x0A0A
[7:3] Reserved Reserved.
2
Reset phase offset
Resets the incremental phase offset to zero.
This is an autoclearing bit.
1
Decrement phase offset
Decrements the incremental phase offset by the amount specified in the incremental
phase lock offset step size registers (Register 0x0312 to Register 0x0313).
This is an autoclearing bit.
0
Increment phase offset
Increments the incremental phase offset by the amount specified in the incremental
phase lock offset step size registers (Register 0x0312 to Register 0x0313).
This is an autoclearing bit.
Table 99. Reference Validation Override Controls
Address Bits Bit Name Description
0x0A0B
[7:4] Reserved Reserved.
3
Force Timeout D
Setting this autoclearing bit emulates timeout of the validation timer for Reference D
and allows the user to make REFD valid immediately.
2 Force Timeout C
Setting this autoclearing bit emulates timeout of the validation timer for Reference C
and allows the user to make REFC valid immediately.
1 Force Timeout B
Setting this autoclearing bit emulates timeout of the validation timer for Reference B
and allows the user to make REFB valid immediately.
0 Force Timeout A
Setting this autoclearing bit emulates timeout of the validation timer for Reference A
and allows the user to make REFA valid immediately.
0x0A0C [7:4] Reserved Reserved.
3
Ref Mon Override D Overrides the reference monitor REF FAULT signal for Reference D (default: 0).
2
Ref Mon Override C Overrides the reference monitor REF FAULT signal for Reference C (default: 0).
1
Ref Mon Override B Overrides the reference monitor REF FAULT signal for Reference B (default: 0).
0
Ref Mon Override A Overrides the reference monitor REF FAULT signal for Reference A (default: 0).