LTC1098AI datasheet(23/28 Pages) LINER

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LTC1096/LTC1096L

LTC1098/LTC1098L

APPLICATI

TYPICAL

MPU TRANSMIT

WORD

CLK

DOUT

MPU RECEIVED

WORD

DIN

ODD/

SIGN

MSBF

SGL/

DIFF

XXXXXXXX

START

BIT

BYTE 1

BYTE 2 (DUMMY)

X = DON'T CARE

START

SGL/

DIFF

DON'T CARE

ODD/

SIGN

MSBF

2ND TRANSFER

1ST TRANSFER

LTC1096/8 • TA03

Data Exchange Between LTC1098(L) and MC68HC05C4

Hardware and Software Interface to Motorola MC68HC05C4

LTC1096/8 • TA04

CLK

DIN

ANALOG

INPUTS

SCK

DOUT

MISO

MOSI

MC68HC05C4

LTC1098

LOCATION A + 1

LSB

LOCATION A

BYTE 2

BYTE 1

LTC1096/8 • TA05

DOUT from LTC1098(L) Stored in MC68HC05C4

LABEL

MNEMONIC

COMMENTS

START

BCLRn

Bit 0 Port C goes low (CS goes low)

LDA

Load LTC1098(L) DIN word into Acc.

STA

Load LTC1098(L) DIN word into SPI from Acc.

Transfer begins.

TST

Test status of SPIF

BPL

Loop to previous instruction if not done

with transfer

LDA

Load contents of SPI data register

into Acc. (DOUT MSBs)

STA

Start next SPI cycle

AND

Clear the first DOUT word

STA

Store in memory location A (MSBs)

TST

Test status of SPIF

BPL

Loop to previous instruction if not done

with transfer

BSETn

Set B0 of Port C (CS goes high)

LDA

Load contents of SPI data register into

Acc. (DOUT LSBs)

STA

Store in memory location A + 1 (LSBs)

LTC1098AI Datasheet(PDF) 23 Page - Linear Technology

LTC1098AI Datasheet(HTML) 23 Page - Linear Technology

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