la2657m Sanyo Semiconductor Corporation, la2657m Datasheet - Page 4

• Manufacturer Part Number: la2657m
• Description: Car Audio Electronic Volume And Tone Control Ic With On-chip Bbe Sound Processor
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
BBE+LC75421 Combined IC Pin Assignment
* : No connections whatsoever may be made to NC pins.
* : The input function uses items 1 to 4.
* : The BBE chip must be operated within ranges such that the pin 36 and pin 37 output levels never exceed 2.5V rms in
bypass mode.
No
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
Pin
L4 for the LC75421
L3 for the LC75421
L2 for the LC75421
L1 for the LC75421
Vref for the LC75421
R1 for the LC75421
R2 for the LC75421
R3 for the LC75421
R4 for the LC75421
RSELO for the LC75421
RIN for the LC75421
RTRE for the LC75421
RBASS1 for the LC75421
RBASS2 for the LC75421
RSB for the LC75421
ROUT for the LC75421
RFIN for the LC75421
V CC for the BBE chip
Vref for the BBE chip
CONT for the BBE chip
GND for the BBE chip
R-IN for the BBE chip
RC1 for the BBE chip
RC3 for the BBE chip
R-VOL2 for the BBE chip
RC2 for the BBE chip
R-VOL1 for the BBE chip
[Pin Numbers for Each Chip]
NC
NC
NC
NC
NC
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[19]
[20]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
LA2657M
No
33
34
36
37
39
45
46
48
50
53
54
55
61
62
63
64
35
38
40
41
42
43
44
47
49
51
52
56
57
58
59
60
RROUT for the LC75421
LROUT for the LC75421
LFOUT for the LC75421
LTRE for the LC75421
LSELO for the LC75421
Pin
R-MIX for the BBE chip
R-OUT for the BBE chip
L-OUT for the BBE chip
L-MIX for the BBE chip
L-VOL1 for the BBE chip
LC2 for the BBE chip
L-VOL2 for the BBE chip
LC3 for the BBE chip
LC1 for the BBE chip
L-IN for the BBE chip
RFOUT for the LC75421
V DD for the LC75421
CL for the LC75421
DI for the LC75421
CE for the LC75421
V SS for the LC75421
LFIN for the LC75421
LOUT for the LC75421
LSB for the LC75421
LBASS2 for the LC75421
LBASS1 for the LC75421
LIN for the LC75421
[Pin Numbers for Each Chip]
NC
NC
NC
NC
NC
No.8078-4/8
[11]
[18]
[10]
[12]
[13]
[14]
[15]
[16]
[17]
[33]
[34]
[35]
[36]
[10]
[11]
[12]
[13]
[9]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]