AD5758 datasheet(69/72 Pages) AD

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Data Sheet

AD5758

Rev. 0 | Page 69 of 72

Frequency Monitor Register

Address: 0x18, Reset: 0x180000, Name: FREQ_MONITOR

An internal frequency monitor uses the internal oscillator (MCLK) to create a pulse at a frequency of 1 kHz (MCLK/10,000). This pulse is

used to increment a 16-bit counter. The value of the counter is available to read in the FREQ_MONITOR register. The user can poll this

register periodically and use it both as a diagnostic tool for the internal oscillator (to monitor that the oscillator is running) and to measure the

frequency. This feature is enabled by default via the FREQ_MON_EN bit in the DIGITAL_DIAG_CONFIG register.

Table 49. Bit Descriptions for FREQ_MONITOR

Bits

Bit Name

Description

Reset

Access

FAULT_PIN_STATUS

The FAULT_PIN_STATUS bit reflects the inverted current status of the FAULT pin.

0x0

[20:16]

REGISTER_ADDRESS

0x0

[15:0]

FREQ_MONITOR

Internal clock counter value.

0x0

Generic ID Register

Address: 0x1C, Reset: 0x1C0000, Name: DEVICE_ID_3

Table 50. Bit Descriptions for DEVICE_ID_3

Bits

Bit Name

Description

Reset

Access

FAULT_PIN_STATUS

The FAULT_PIN_STATUS bit reflects the inverted current status of the FAULT pin.

0x0

[20:16]

REGISTER_ADDRESS

0x0

[15:8]

Reserved

Reserved.

0x0

[7:3]

Reserved

Reserved.

0x0

[2:0]

Generic ID

Generic ID.

0x0

000: reserved

001: reserved

010: AD5758

011: reserved

100: reserved

101: reserved

110: reserved

111: reserved

AD5758 Datasheet(PDF) 69 Page - Analog Devices

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