SM6453AB_02 Datasheet, PDF (2/19 Pages) Nippon Precision Circuits Inc – 3-wire Serial Data Volume Control for Headphone Amplifier IC

SM6453AB
PIN DESCRIPTION
Number
Name
I/O ¹
Description
V _DD
1
MLEN
Ip
Microcontroller latch enable input
2
MCK
Ip
Microcontroller clock input
3
MDT
Ip
Microcontroller data input
4
RSTN
Ip
System reset (LOW-level reset)
V_DD2
5
MUTEN
I
Mute input (LOW-level mute)
6
PDN
I
Power-down mode select (LOW-level power-down)
7
BEEPI
I
Beep signal input
8
VREF1
O
Reference voltage 1
9
VREF2
O
Reference voltage 2
10
AVDD1
−
EVR-stage analog VDD
11
LIN1
I
Left-channel analog input 1
12
LIN2
13
AVSS1
I
Left-channel analog input 2
−
EVR-stage analog VSS
14
RIN1
I
Right-channel analog input 1
15
RIN2
I
Right-channel analog input 2
16
VBIAS
O
EVR-stage bias voltage
17
BEEPRO
O
Right-channel beep signal output
18
ROUT
O
Right-channel output
19
AVSS3
−
Headphone amplifier right-channel analog VSS
V_DD1
20
AVDD3
−
Headphone amplifier right-channel analog VDD
21
AVDD2
−
Headphone amplifier left-channel analog VDD
22
AVSS2
−
Headphone amplifier left-channel analog VSS
23
LOUT
O
Left-channel output
24
BEEPLO
O
Left-channel beep signal output
25
BSTO
O
Bass boost auxiliary output
26
BSTN
I
Bass boost auxiliary input
27
BSTC
O
Bass boost capacitor connection
28
AGCTC
O
AGC time constant set capacitor connection
29
LRMXO
O
Left and right-channel mixer detector output
30
DVSS
−
Digital VSS
31
DVDD2
−
Digital VDD2
32
DVDD1
−
Digital VDD1
V _DD2
1. Ip = input with pull-up resistance
V_DD1, V_DD2, V_SS definitions
V_DD1 = DVDD2 = AVDD1 = AVDD2 = AVDD3
V_DD2 = DVDD1
V_SS = DVSS = AVSS1 = AVSS2 = AVSS3
NIPPON PRECISION CIRCUITS INC.—2