Technical Note

8/18

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2010.10 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

BD3401KS2,BD3402KS2

・

TONE ATT settings

TONE ATT can be set to either one of three modes: 0dB, -4dB and -8dB using D3 in Data (3) or Data (4).

When setting TONE ATT, data should be sent as follows:

(1)TONE ATT=-4dB

(a) Sending Data (3) only

MSB

LSB

Data(3)

L

(b) Sending all the data

MSB

LSB MSB

LSB MSB

LSB MSB

LSB

MSB

LSB

Data(1)

L

Data(2)

L

Data(4)

L

Data(3)

L

・・・

Data(9)

L

Sending Data(3) after Data(4) follows that Data(3) is given a higher priority.

(2)TONE ATT=-8dB

(a) Sending Data(4) only

←

MSB

LSB

Data(4)

L

(b) Sending all the data

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

MSB

LSB

Data(1)

L

Data(2)

L

Data(3)

L

Data(4)

L

・・・

Data(9)

L

Sending Data(4) after Data(3) follows that Data(4) is given a higher priority.