AD9523-1SLASHPCBZ datasheet(53/60 Pages) AD

номер детали	AD9523-1/PCBZ

подробное описание детали	Low Jitter Clock Generator

PDF	60 Pages

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производитель	AD [Analog Devices]

домашняя страница	http://www.analog.com

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AD9523-1

Rev. B | Page 53 of 60

Readback (Address 0x22C to Address 0x22D)

Table 54. Readback Registers (Readback 0 and Readback 1)

Address

Bits

Bit Name

Description

Status PLL2 reference clock

1: OK.

0: off/clocks are missing.

Status PLL2 feedback clock

1: OK.

0: off/clocks are missing.

Status VCXO

1: OK.

0: off/clocks are missing.

Status REF_TEST

1: OK.

0: off/clocks are missing.

Status REFB

1: OK.

0: off/clocks are missing.

Status REFA

1: OK.

0: off/clocks are missing.

Lock detect PLL2

1: locked.

0: unlocked.

0x22C

Lock detect PLL1

1: locked.

0: unlocked.

[7:4]

Reserved

Reserved.

Holdover active

1: holdover is active (both references are missing).

0: normal operation.

Selected reference

(in auto mode)

Selected reference (applies only when the device automatically selects the reference;

for example, not in manual control mode).

1: REFB.

0: REFA.

Reserved

Reserved.

0x22D

VCO calibration in progress

1: VCO calibration in progress.

0: VCO calibration not in progress.

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