ADFS5758 datasheet(61/75 Pages) AD

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Data Sheet

ADFS5758

Rev. 0 | Page 61 of 75

Bits

Bit Name

Description

Reset

Access

[9:7]

CLKOUT_FREQ

Configure the frequency of CLKOUT.

0x4

R/W

000: 416 kHz.

001: 435 kHz.

010: 454 kHz.

011: 476 kHz.

100: 500 kHz (default).

101: 526 kHz.

110: 555 kHz.

111: 588 kHz.

HART_EN

Enable the path to the CHART pin.

0x0

R/W

0: output of the DAC drives the output stage directly (default).

1: CHART path is coupled to the DAC output to allow a HART modem connection or

connection of a slew capacitor.

NEG_OFFSET_EN

Enable negative offset in unipolar VOUT mode. When set, this bit offsets the

currently enabled unipolar output range by the value listed here. This bit is only

applicable to the 0 V to 6 V range and the 0 V to 12 V range. The 0 V to 6 V range

becomes −300 mV to +5.7 V; the 0 V to 12 V range becomes −400 mV to 11.6 V.

0x0

R/W

0: disable (default).

1: enable.

CLEAR_NOW_EN

Enables clear to occur immediately, even if the output slew feature is currently enabled.

0x0

R/W

0: disable (default).

1: enable.

SPI_DIAG_QUIET_EN

Enable SPI diagnostic quiet mode. When this bit is enabled, SPI_CRC_ERR, SLIPBIT_ERR,

and SCLK_COUNT_ERR are not included in the logical OR calculation, which creates the

DIG_DIAG_STATUS bit in the status register. They are also masked from affecting

the FAULT pin if this bit is set.

0x0

R/W

0: disable (default).

1: enable.

OSC_STOP_DETECT_EN

Enable automatic 0x07DEAD code on SDO if the internal oscillator (MCLK) stops.

0x1

R/W

0: disable.

1: enable (default).

Reserved

Reserved. Do not alter the default value of this bit.

0x0

R/W

Reserved

Reserved. Do not alter the default value of this bit.

0x0

R/W

General-Purpose Configuration 2 Register

Address: 0x0A, Reset: 0x0A0200, Name: GP_CONFIG2

This register is used to configure and enable functions such as fault injection, internal current output monitor, and global software

LDAC.

Table 38. Bit Descriptions for GP_CONFIG2

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

RESERVED

Reserved.

0x0

[14:13]

COMPARATOR_CONFIG

Configures the voltage comparators including ability to drive both the

temperature and voltage comparator inputs directly for test purposes. Note that

the temperature comparators are permanently enabled.

0x0

R/W

00: disable voltage comparators (default).

01: with all comparators enabled, drive all comparator inputs high for diagnostic

test purposes. This causes all voltage comparator result flags to assert in the

ANALOG_DIAG_RESULTS register.

10: with all comparators enabled, drive all comparator inputs low for diagnostic

test purposes. This causes all voltage and temperature comparator result flags to

assert in the ANALOG_DIAG_RESULTS register.

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