AD74115BCPZ datasheet(90/103 Pages) AD

90 / 103 page

Data Sheet

AD74115

analog.com

Rev. 0 | 90 of 103

ADC Conversion Control Register

Address: 0x3B, Reset: 0x0000, Name: ADC_CONV_CTRL

This register controls the ADC conversions that must be performed.

Disable ADC conversions before making any changes to the ADC_CONV_CTRL register.

If enabling a sequence of conversions, ensure that any previous sequence has completed. Ensure that the ADC_BUSY bit in the LIVE_STA-

TUS register is 0 before enabling the next sequence.

Table 56. Bit Descriptions for ADC_CONV_CTRL

Bits

Bit Name

Description

Reset

Access

[15:14]

CONV_RATE_DIAG

Conversion Rate for Diagnostics. A value outside of those listed as follows selects a rate of 20 SPS.

0x0

R/W

00: sampling rate of 20 SPS and provides 50 Hz and 60 Hz noise rejection.

01: sampling rate of 4.8 kSPS.

10: sampling rate of 9.6 kSPS.

[13:12]

CONV_SEQ

Selects Single or Continuous Mode.

0x0

R/W

00: put ADC in standby mode. If converting continuously, stop conversions at the end of the current

sequence and leave the ADC powered up.

01: start single sequence conversion. Perform a single conversion on each enabled channel and

diagnostic. Once complete, ADC moves to the idle state.

10: start continuous conversions. Sequences continuously through the enabled channels and diagnostics.

Once conversions are stopped, the sequencer waits until the end of the current sequence before moving

to idle or ADC power down.

11: stop continuous conversions or power down the ADC. The ADC is powered down and takes 100 μs to

power up if subsequent conversions are requested.

DIAG_3_EN

Enable Conversions on Diagnostic 3.

0x0

R/W

DIAG_2_EN

Enable Conversions on Diagnostic 2.

0x0

R/W

DIAG_1_EN

Enable Conversions on Diagnostic 1.

0x0

R/W

DIAG_0_EN

Enable Conversions on Diagnostic 0.

0x0

R/W

[7:2]

RESERVED

Reserved.

0x0

CONV2_EN

Enable Conversions on Conversion 2.

0x0

R/W

CONV1_EN

Enables Conversions on Conversion 1.

0x0

R/W

Diagnostics Select Register

Address: 0x3C, Reset: 0x0000, Name: DIAG_ASSIGN

This register assigns diagnostics to the four available diagnostics inputs.

AD74115BCPZ Datasheet(PDF) 90 Page - Analog Devices

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