Datasheet

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 Register Description

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

1 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

0 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.

Product Folder Links: LMP90100