QS7777PF/CF
PIN DESCRIPTION
Number
1
2
3
4
5
6
7
P S AV E
–
MUTE
8
–
SPREAD
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
–
AC
AR
MO
BYP
P/S
VDD
RROUT
RLOUT
COUT
FROUT
FLOUT
QXAC1
QXAC2
QXAC3
QXAC4
QXAC5
QXBC1
QXBC2
QXBC3
QXBC4
QXBC5
VCC
QXCC1
QXCC2
QXCC3
QXCC4
QXDC1
QXDC2
QXDC3
QXDC4
FLIN
FRIN
CIN
SUBIN
RLIN
RRIN
MSC4
MSC5
MSC6
Name
P arallel
VREFOUT
VREFIN
MSC3
MSC2
MSC1
GND
–
STRB
–
SCL
–
SDA
Serial
I/O
O
I
I
I
I
–
I
I
I
I
I
I/O
I
I
I
I
I
–
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
–
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
V
C C
/2 reference voltage output
V
C C
/2 reference voltage input (biased internally to V
C C
/2)
Mono/stereo conversion filter capacitor 3
Mono/stereo conversion filter capacitor 2
Mono/stereo conversion filter capacitor 1
Ground
Pow er save control (HIGH: pow er save on, LOW : pow er save off)
Serial data strobe (not used on I
2
C bus device QS7777CF)
Mute signal control (HIGH: mute on, LOW : mute off)
Serial data shift clock input (QS7777CF: CMOS input, no protection diode connected
between this pin and V D D )
Enhancement control (HIGH: maximum spread, LOW : minimum spread)
Serial data input (and ACK signal output for I
2
C bus device QS7777CF: n-channel
open-drain pin, no protection diode connected between this pin and VDD).
Center speaker control (HIGH: actual center, LOW : virtual center)
Rear speaker control (HIGH: actual rear, LOW : virtual rear)
Mono-to-stereo convert select (HIGH: ON, LOW : OFF)
Bypass/QSurround select control (HIGH: bypass, LOW : QSurround)
Interface method select (HIGH: parallel input, LOW : serial input)
4.5 to 5.5V DC digital supply
Rear right-channel signal output
Rear left-channel signal output
Center signal output
Front right-channel signal output
Front left-channel signal output
QExpander filter A capacitor 1
QExpander filter A capacitor 2
QExpander filter A capacitor 3
QExpander filter A capacitor 4
QExpander filter B capacitor 5
QExpander filter B capacitor 1
QExpander filter B capacitor 2
QExpander filter B capacitor 3
QExpander filter B capacitor 4
QExpander filter B capacitor 5
5 to 13V DC analog supply
QExpander filter C capacitor 1
QExpander filter C capacitor 2
QExpander filter C capacitor 3
QExpander filter C capacitor 4
QExpander filter D capacitor 1
QExpander filter D capacitor 2
QExpander filter D capacitor 3
QExpander filter D capacitor 4
Front left-channel signal input
Front right-channel signal input
Center-channel signal input
S u b - woofer signal input
Rear left-channel signal input
Rear right-channel signal input
Mono/stereo conversion filter capacitor 4
Mono/stereo conversion filter capacitor 5
Mono/stereo conversion filter capacitor 6
Description
NIPPON PRECISION CIRCUITS—3
NPC [ NIPPON PRECISION CIRCUITS INC ]
