MAX17843 datasheet(127/131 Pages) MAXIM

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BIT

POR

NAME

DESCRIPTION

D15

CTSTDAC[3:0]

Configures the current level for all enabled test sources per the table below (either 6.25µA

or 3.125µA per bit.

D14

D13

CTSTDAC{3:0]

TEST SOURCE CURRENT

Cx, AUXINn

D12

6.25µA

3.125µA

12.5µA

6.25µA

18.75µA

9.375µA

…

….

87.5µA

43.75µA

93.75µA

46.875µA

100µA

50µA

D11

CTSTSRC

Configures the cell input test-current sources to either source current from VAA (logic-one),

or sink current to AGND (logic-zero). For C0, configures the cell input test current to source

from VAA only.

D10

Reserved

Reserved for future use.

AUXINTSTEN[2:1]

Enables the test current sources connected to the corresponding AUXINn input for

diagnostic testing. The current level is configured by the CTSTDAC[3:0] and the current

direction is configured by CTSTSRC.

MUXDIAGBUS

Selects the HVMUX output to which the HVMUX test current source is connected, if

MUXDIAGPAIR is enabled, as shown below:

MUXDIAGBUS

HVMUX OUTPUT

Output used for even cells, C0, and AGND.

Output used for odd cells, REF, and ALTREF.

MUXDIAGPAIR

Configures a single HVMUX test-current source to be connected to only one HVMUX

output (as selected by MUXDIAGBUS). In the default configuration (MUXDIAGPAIR = 0),

both HVMUX test-current sources are connected to both HVMUX outputs.

Reserved

Always reads logic-zero.

MUXDIAGEN

Enables the HVMUX test-current source(s). The current level is configured by

CSTDAC[3:0] and the connectivity is configured by MUXDIAGPAIR and MUXDIAGBUS.

The ADC logic latches the value of this bit at the start of the measurement cycle. Changing the

value of this bit takes effect at the next measurement-cycle start.

ALTMUXSEL

Enables cell measurements on the SWn inputs (ALTMUX data path) instead of the Cn

inputs (HVMUX data path). See the Diagnostics section.

DIAGSEL[2:0]

Selects the diagnostic measurement for the acquisition per table below:

DIAGSEL[2:0]

DIAGNOSTIC MEASUREMENT

0b000

No measurement

0b001

VALTREF (with ADC reference = REF)

0b010

VAA (with ADC reference = REF)

0b011

LSAMP offset

0b100

Zero-scale ADC output (000h)

0b101

Full-scale ADC output (FFFh)

0b110

Die temperature

0b111

No measurement

MAX17843

12-Channel, High-Voltage Smart Sensor

Data-Acquisition Interface

www.maximintegrated.com

Maxim Integrated │ 127

DIAGCFG Register (address 0x51)

MAX17843 Datasheet(PDF) 127 Page - Maxim Integrated Products

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