SAMHOP Microelectronics Corp.
SM7346A
6 CHANNELS VOLUME CONTROLLER
GENERAL DESCRIPTION
The SM7346A is 6 channels electric
volume controlled 3-wire serial data. The IC
is suitable for use in DVD systems and AV.
FEATURES
* 4 Output ports
* Built-in microcomputer interface circuit con-
trolled by 16-bit serial data.
* Electric volume
Volume level: 0dB~-95dB, -
∞dB(1dB/
step)
* Tone control
Bass/Treble, 0dB~+14dB(2dB/step)
APPLICATIONS
* DVD
* Home Audio Equipment
* AV
PIN ASSIGNMENTS
OUT4
OUT3
OUT2
OUT1
AVDD
SWin
GNDS
SRin
SLin
GNDC
Cin
GNDR
Rin
GNDL
Lin
BYPASSR
BYPASSL
LTRE
LBASS3
LBASS2
LBASS1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SDIP 42PIN
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
DVDD
OUT4
CLK
OUT3
DATA
OUT2
LATCH
OUT1
DGND
AVDD
AGND
SWin
SW out
GNDS
SRout
SRin
SLout
SLin
Cout
GNDC
Rout
Cin
Lout
GNDR
AVSS
Rin
CL1
GNDL
CL2
Lin
CR1
BYPASSR
CR2
BYPASSL
RTRE
LTRE
RBASS3
LBASS3
RBASS2
LBASS2
RBASS1
LBASS1
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
TSOP 44PIN
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
DVDD
CLK
DATA
LATCH
DGND
AGND
SW out
SRout
SLout
Cout
Rout
Lout
AVSS
CL1
CL2
CR1
CR2
RTRE
RBASS3
RBASS2
RBASS1
NC
Page 1
AUG. 2002
STATSCHIP [ STATS CHIPPAC, LTD. ]
