DB839 datasheet(9/20 Pages) CMLMICRO

9 / 20 page

Digitally Controlled Analog I/O Processor

MX839 PRELIMINARY INFORMATION

xCOM Inc.

www.mxcom.com Tele: 800 638-5577 336 744-5050

Fax: 336 744-5054

Doc. # 20480164.002

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4.6

Read Only Registers (8-Bit and 16-Bit)

HEX

ADDRESS/

COMMAND

NAME

BIT 7

(D7)

BIT 6

(D6)

BIT 5

(D5)

BIT 4

(D4)

BIT 3

(D3)

BIT 2

(D2)

BIT 1

(D1)

BIT 0

(D0)

$D1

IRQ

FLAGS

HIRQF

LIRQF

HIRQF

LIRQF

HIRQF

LIRQF

HIRQF

LIRQF

$DC

A/D DATA1

(1)

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

(2)

BIT 9

BIT 8

$DD

A/D DATA2

(1)

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

(2)

BIT 9

BIT 8

$DE

A/D DATA3

(1)

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

(2)

BIT 9

BIT 8

$DF

A/D DATA4

(1)

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

(2)

BIT 9

BIT 8

Table 3: Read Only Registers (8-Bit and 16-Bit)

4.7

Write Only Register Description

4.7.1

RESET Register (Hex Address $01)

The reset command has no data attached to it. It sets the device registers into the specific states listed below:

BIT 7

(D7)

BIT 6

(D6)

BIT 5

(D5)

BIT 4

(D4)

BIT 3

(D3)

BIT 2

(D2)

BIT 1

(D1)

BIT 0

(D0)

CLOCK CONTROL

DAC CONTROL

DAC1 DATA1

000

DAC2 DATA1

000

DAC3 DATA1

000

A/D CONTROL

VARIABLE ATTENUATOR

(1)

(2)

000

MAG COMP ONE LEVELS

(1)

(2)

000

MAG COMP TWO LEVELS

(1)

(2)

000

MAG COMP THREE LEVELS

(1)

(2)

000

MAG COMP FOUR LEVELS

(1)

(2)

000

Table 4: RESET Register (Hex Address $01)

Note

Default resolution is defined as 8-Bits.

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