SC9260

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:1.0

2004.08.03

Http: www.silan.com.cn

Page 7 of

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2. Setting volume values

Optional attenuation data is input through the DATA, CK and STB terminals.

Data consists of 18 bits as follows

(1) Serial data format

(2)Chip select code (C1~C4)

Chip select code is set to use serial bus line in common with other ICs. Data C2, C3, C4 is fixed 0, 1, 1 in

SC9260. When level of CS input pin (7 pin) correspond to C1 bit, data is valid.

(3)L is left-channel select data; R is right-channel select data (L/R)

When L=1, left-channel volume is set; when R=1, right-channel volume is set.

(When R=L=1, both channel volume are set simultaneously).

(4)LD is loudness setting data

When LD=”0”, loudness is OFF (LS1=OFF, LS2=ON)

When LD=”1”, loudness is ON (LS1=ON, LS2=OFF)

(5)Volume setting data (D1~D6)

List of volume data and step

Enabled

Switch

D1

D2

D3

D4

D5

D6

Enabled

Switch

D1

D2

D3

D4

D5

D6

K0

0

0

0

0

0

0

K20

0

0

1

0

1

0

K1

1

0

0

0

0

0

K21

1

0

1

0

1

0

K2

0

1

0

0

0

0

K22

0

1

1

0

1

0

K3

1

1

0

0

0

0

K23

1

1

1

0

1

0

K4

0

0

1

0

0

0

K24

0

0

0

1

1

0

K5

1

0

1

0

0

0

K25

1

0

0

1

1

0

K6

0

1

1

0

0

0

K26

0

1

0

1

1

0

K7

1

1

1

0

0

0

K27

1

1

0

1

1

0

K8

0

0

0

1

0

0

K28

0

0

1

1

1

0

K9

1

0

0

1

0

0

K29

1

0

1

1

1

0

K10

0

1

0

1

0

0

K30

0

1

1

1

1

0

K11

1

1

0

1

0

0

K31

1

1

1

1

1

0

K12

0

0

1

1

0

0

K32

0

0

0

0

0

1

K13

1

0

1

1

0

0

K33

1

0

0

0

0

1

K14

0

1

1

1

0

0

K34

0

1

0

0

0

1

K15

1

1

1

1

0

0

K35

1

1

0

0

0

1

K16

0

0

0

0

1

0

K36

0

0

1

0

0

1

K17

1

0

0

0

1

0

K37

1

0

1

0

0

1

K18

0

1

0

0

1

0

K38

0

1

1

0

0

1

K19

1

1

0

0

1

0

K39

1

1

1

0

0

1

K40

0

0

0

1

0

1