BD37034FVME2 datasheet(11/47 Pages) ROHM

Part #	BD37034FVME2

Description	General-Purpose Electronic Volume with Built-in Advanced Switch

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Manufacturer	ROHM [Rohm]

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Datasheet

BD37034FV-M

TSZ02201-0C2C0E100010-1-2

4.OCT.2013 Rev.002

www.rohm.com

TSZ22111

・15・001

(2)I

2C BUS FORMAT

MSB

LSB

MSB

LSB

MSB

LSB

S

Slave Address

A

Select Address

A

Data

A

P

1bit

8bit

1bit

8bit

1bit

8bit

1bit 1bit

S

= Start conditions (Recognition of start bit)

Slave Address

= Recognition of slave address. 7 bits in upper order are voluntary.

The least significant bit is “L” due to writing.

A

= ACKNOWLEDGE bit (Recognition of acknowledgement)

Select Address

= Select every of volume, bass and treble.

Data

= Data on every volume and tone.

P

= Stop condition (Recognition of stop bit)

(3)I

2C BUS Interface Protocol

1)Basic form

S

Slave Address

A

Select Address

A

Data

A

P

MSB

LSB

MSB

LSB

MSB

LSB

2)Automatic increment(Select Address increases (+1) according to the number of data)

S

Slave Address

A

Select Address

A

Data1

A

Data2

A

････

DataN

A

P

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

(Example)

①

Data 1 is set as data of Select Address (20h).

②

Data 2 is set as data of Select Address +1 (28h).

③

Data N is set as data of Select Address +N-1.

3)Configuration unavailable for transmission (In this case, only Select Address 1 is set.)

S

Slave Address

A

Select Address1

A

Data

A

Select Address 2

A

Data

A

P

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

(Note)If any data is transmitted as Select Address 2 next to data,

It is recognized as data, not as Select Address 2.

(4)Slave Address

MSB

LSB

A6

A5

A4

A3

A2

A1

A0

R/W

1

0

80H

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BD37034FVME2 Datasheet(PDF) 11 Page - Rohm

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