AD9558 datasheet(91/104 Pages) AD

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Data Sheet

AD9558

Rev. A | Page 91 of 104

Table 96. IRQ Clearing for History Update, Frequency Limit, and Phase Slew Limit

Address

Bits

Bit Name

Description

[7:5]

Reserved

History updated

Clears history updated IRQ

Frequency unclamped

Clears frequency unclamped IRQ

Frequency clamped

Clears frequency clamped IRQ

Phase slew unlimited

Clears phase slew unlimited IRQ

0x0A07

Phase slew limited

Clears phase slew limited IRQ

Table 97. IRQ Clearing for Reference Inputs

Address

Bits

Bit Name

Description

Reserved

REFB validated

Clears REFB validated IRQ

REFB fault cleared

Clears REFB fault cleared IRQ

REFB fault

Clears REFB fault IRQ

Reserved

REFA validated

Clears REFA validated IRQ

REFA fault cleared

Clears REFA fault cleared IRQ

0x0A08

REFA fault

Clears REFA fault IRQ

Reserved

REFD validated

Clears REFD validated IRQ

REFD fault cleared

Clears REFD fault cleared IRQ

REFD fault

Clears REFD fault IRQ

Reserved

REFC validated

Clears REFC validated IRQ

REFC fault cleared

Clears REFC fault cleared IRQ

0x0A09

REFC fault

Clears REFC fault IRQ

Table 98. Incremental Phase Offset Control

Address

Bits

Bit Name

Description

[7:3]

Reserved

Reserved.

Reset phase offset

Resets the incremental phase offset to zero.

This is an autoclearing bit.

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.

0x0A0A

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

[7:4]

Reserved

Reserved.

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.

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.

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.

0x0A0B

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.

[7:4]

Reserved

Reserved.

Ref Mon Override D

Overrides the reference monitor REF FAULT signal for Reference D (default: 0).

Ref Mon Override C

Overrides the reference monitor REF FAULT signal for Reference C (default: 0).

Ref Mon Override B

Overrides the reference monitor REF FAULT signal for Reference B (default: 0).

0x0A0C

Ref Mon Override A

Overrides the reference monitor REF FAULT signal for Reference A (default: 0).

AD9558 Datasheet(PDF) 91 Page - Analog Devices

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