Yamaha AS2000BL - Ic504: Lc709004 A (Front P.C.b.); Serial Parameter Extension; 8-Channel Analog Multiplexer;Demultiplexer

34
A-S2000
A-S2000
P00
P01
P02
P03
P04
P05
P06
P07
VDDP1
P10
P11
P12
P13
P14
P15
P16
P17
VSS
RES#
VDD
CS#
CLK#
DIN
DOUT
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
FUNCTION LED CD
FUNCTION LED TUNER
FUNCTION LED LINE1
FUNCTION LED LINE2
FUNCTION LED BALANCE
FUNCTION LED PHONO
FUNCTION LED MAIN_DIRECT
LED MUTE
Treble control
Bass control
Initial clear extecded IC
–
Detect head phone insert, H: HP non inserted / L: HP inserted
Balance gain select SW
Detect laver SW for MUTE
Detect laver MMMC, Hi: MC / Low: MM
LED_CD
LED_TU
LED_L1
LED_L2
LED_BAL
LED_PHO
LED_MDIR
LED_MT
VDDP1
SW_TRE
SW_BAS
0
0
I_HP
I_BALGAIN
I_MT
I_MMMC
VSS
RES
VDD
CS
CLK
DIN
DOUT
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
Detail of Function
Pin
No.
Port Name
Function
Name
(P.C.B.)
I/O
VCC
2
1
0
3
A
B
C
GND
VEE
INH
5
7
COM
6
4
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
SP_AB rotary SW
HP_TRIM rotary SW
TREBLE, BASS, L/R BALANCE reference of center TAP
LR_BALANCE volume AD
BASS volume AD
TREBLE volume AD
COM out
Function selector rotary SW AD
MAIN VOLUME AD
+5STBY
SP_AB
HPTRIM
I_CNTR
I_LRBAL
4051A
4051B
4051C
MG
MG
MG
I_BAS
I_TRE
EXAD
I_ISEL
I_VOL
O
I
I
I
I
I
I
I
I
Detail of Function
Pin
No.
Port Name
Function
Name
(P.C.B.)
I/O
IC504: LC709004A (FRONT P.C.B.)
Serial parameter extension
IC501: TC74HC4051AFEL (FRONT P.C.B.)
8-channel analog multiplexer/demultiplexer