LMP90100MHESLASHNOPB datasheet(56/69 Pages) TI1

56 / 69 page

LMP90100

SNAS510P – JANUARY 2011 – REVISED MARCH 2013

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Table 13. ADC_DONE: ADC Data Available (Address 0x18)

Bit

Bit Symbol

Bit Description

Data Available – indicates if new conversion data is available

[7:0]

DT_AVAIL_B

0x00

− 0xFE: Available

0xFF: Not available

Table 14. ADC_DOUT: 24-bit Conversion Data (two’s complement) (Address 0x1A - 0x1C)

Address

Name

0x1A

ADC_DOUTH

ADC Conversion Data [23:16]

0x1B

ADC_DOUTM

ADC Conversion Data [15:8]

0x1C

ADC_DOUTL

ADC Conversion Data [7:0]

Note: Repeat reads of these registers are allowed as long as such reads are spaced apart by at least 72 µs.

CHANNEL CONFIGURATION REGISTERS

Table 15. CH_STS: Channel Status (Address 0x1E)

Bit

Bit Symbol

Bit Description

[7:2]

Reserved

Channel Scan Not Ready – indicates if it is okay to program CH_SCAN

CH_SCAN_NRDY

0: Update not pending, CH_SCAN register is okay to program

1: Update pending, CH_SCAN register is not ready to be programmed

Invalid or Repeated Read Status

INV_OR_RPT_RD_STS

0: ADC_DOUT just read was valid and hitherto unread

1: ADC_DOUT just read was either invalid (not ready) or there was a repeated read.

Table 16. CH_SCAN: Channel Scan Mode (Address 0x1F)

Bit

Bit Symbol

Bit Description

Channel Scan Select

0x0 (default): ScanMode0: Single-Channel Continuous Conversion

[7:6]

CH_SCAN_SEL

0x1: ScanMode1: One or more channels Single Scan

0x2: ScanMode2: One or more channels Continuous Scan

0x3: ScanMode3: One or more channels Continuous Scan with Burnout Currents

Last channel for conversion

0x0: CH0

0x1: CH1

0x2: CH2

LAST_CH

0x3: CH3

[5:3]

(CH4 to CH6 for LMP90100 and

0x4: CH4

LMP90099 only)

0x5: CH5

0x6 (default): CH6

Note: LAST_CH cannot be smaller than FIRST_CH. For example, if LAST_CH = CH5, then

FIRST_CH cannot be CH6. If 0x7 is written it is ignored.

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