McIntosh C50 - Input and Level Adjustments; Reassigning Source Inputs Examples; Balancing Input Volume Levels

23 24
CONTROL 751266 SCH 1 of 5
3
TO DISPLAY PCB
J7-1
J7-12
RESET
(1.8V)
0R104
(1.8V)
0R103
0
R101
0
R106
(1.8V Out)
(1.8V)
1000pFC54
1.5K
R96
12pF
C50
12pF
C51
(1.8V)
100
R98
10KR102
.1UFC48
SW2
.01uF
C53
18.432000MHz
2
1
Y1
ADC-VREF
+3V-Atmel
+3V-Atmel
+3V-Atmel +3V-Atmel
+3V-Atmel
I2C_SCL
I2C_SDA
EXT_RXD
EXT_TXD
NRST
FR_SDA
PASS_IN
TCK
TDI
TDO TMS
VOL_A
VOL_B
USB-
USB+
VDD-CORE-R
VDD-CORE-R
VDD-CORE-R
VDD-CORE-R
VDD-CORE-R
SCK1-Spare
IR_CTL
DAC_RXD
DAC_TXD
PA20/PGMD8/AD3
16
PA19/PGMD7/AD2
13
PA22/PGMD10
14
PA21/PGMD9
11
VDDOUT
8
PA17/PGMD5/AD0
9
AD7
6
AD4
3
AD5
4
ADVREF
1
VDDPLL
64
XOUT
61
XIN/PGMCK
62
VDDFLASH
59
DDM
56
DDP
57
VDDCORE
54
TMS
51
PA31
52
TDO
49
TDI
33
PA4/PGMNCMD
36
PA5/PGMRDY
35
PA28
38
PA29
41
TST
40
PA3
43
GND
46
VDDIO
45
PA0/PGMEN0
48
PA23/PGMD11
15
VDDIN
7
AD6
5
VDDCORE
12
PA18/PGMD6/AD1
10
GND
2
GND
17
PA15/PGMD3
20
PA16/PGMD4
19
PA13/PGMD1
22
PA25/PGMD13
25
VDDCORE
24
PA12/PGMD0
27
PA9/PGMM1
30
PA10/PGMM2
29
PA7/PGMNVALID
32
PA6/PGMNOE
34
PA27/PGMD15
37
NRST
39
PA30
42
PA2/PGMEN2
44
PA1/PGMEN1
47
PLLRC
63
VDDIO
58
TCK
53
GND
60
ERASE
55
JTAGSEL
50
VDDIO
18
PA24/PGMD12
23
PA11/PGMM3
28
PA14/PGMD2
21
PA26/PGMD14
26
PA8/PGMM0
31
U3
1 2
L12
.1UF
C63
.1UF
C61
.1UF
C62
.1UF
C60
.1UF
C65
+3V-Atmel
3.3V BU
256kbit MEMORY
3.3V BU
I2C_SCL
I2C_SDA
100
R138
10uF
C68
3
1
2
Q4
10K
R136
47.5K
R137
475K
R135
D22
MANUAL RESET
NRST
ON/RESET
3.3V BU
Pin 1
Pin
7
Pin
18
Pin
45
Pin
58/59
WP
7
SCL
6
VCC
8
SDA
5
A1
2
A2
3
AO
1
GND
4
U20
10R134
ADC-VREF
IR_DATA_OUT
22.1R110
22.1
R111
22.1
R112
22.1
R115
22.1
R117
22.1
R119
INPUT_A
FRONT_IR
22.1R121
22.1
R133
22.1
R129
22.1
R130
22.1
R131
22.1
R122
22.1
R123
22.1
R124
22.1
R125
22.1
R126
22.1
R127
22.1
R128
22.1
R132
INPUT_B
DOCK_TXD
DOCK_RXD
22.1R120
22.1
R118
OPENR11 4
OPENR113
22.1R109
22.1R99
22.1
R100
IR_REAR
22.1R108
22.1R105
LEFT PB AD
RIGHT PB AD
TO DISPLAY PCB
SPI_SCL
SPI_SDA
VOL_CE
22.1
R97
VF_CE
Spare
Spare
MISO
3V to 5V VFD Translators
.1UF
C59
22.1R107
22.1
R116
.1UFC66
.1UF
C56
ADC-VREF
ADC-VREF
4.7uF
C49
4.7uF
C64
ON-WAKEUP
FR_SCL
Internal Pull-up
Inter nal Pu ll-dow n
Internal Pull-down
Push and hold Front Panel Standby/On button for 5 Sec.
SW1
3.3V BU
PROG
1
2
4
53
VCC
GND
U25
LVC, AND GATE
133724
1
2
4
53
VCC
GND
U26
133724
1
2
4
53
VCC
GND
U27
3.3V BU 3.3V BU
.1UFC67
Low power wakeup
Pin
18
Not Used1
Not Used2
ON-WAKEUP
EXT_TXD
EXT_RXD
NRST
TCK
TDI
TDO
TMS
J4:13
J4:7
J4:11
J4:2
J4:9
J4:5
J4:10
J4:12
J4:1
J4:3
J4:4
NC
NC
NC
NC
NC
NC
NC
NC
J4:6
J4:8
NC
NC
NC
USB-
USB+
VOL_B
VOL_A
AC DET
VF_CE
SPI_SDA
SPI_SCL
4
2
1
3
B+
GND
5
U5
.1UF
C5
4
2
1
3
B+
GND
5
U4
4
2
1
3
B+
GND
5
U23
IR_DATA_OUT
FRONT_IR
IR_REAR
1
2
4
5
3
VCC
GND
U22
1
2
4
5
3
VCC
GND
U21
ALL_DATA
Active high output,
.1UFC4
3.3V BU
3.3V BU
3.3V BU
1
2
4
53
VCC
GND
U24
IR_CTL
No Data
Data Signal
No Data
Data Signal
to Data Drivers
3.3V BU
Data Out
No Data
SCK1-Spare
+3V-Atmel
OPEN
R228
Spare Micro Pin
22.1
R231
22.1
R232
22.1R233
22.1
R234
22.1
R235
SDAA
3
GND
4
SDAB
6
EN
5
VCC(A)
1
VCC(B)
8
SCLA
2
SCLB
7
U32
J2:1
J2:4
J2:7
J2:3
J2:2
J2:6
J2:9
J2:8
J2:5
J2:10
J2:13
J2:16
J2:15
J2:14
J2:12
J2:18
J2:11
J2:17
INPUT_A
INPUT_B
LEFT PB AD
VFD 5V
VFD SCL
VFD SDA
VFD CE
3.3V
VFD 5V
J5:12
J5:11
J5:10
J5:9
J5:8
J5:7
J5:6
J5:5
J5:4
J5:3
J5:2
J5:1
3.3V BU
ON/RESET
5V
5V
RIGHT PB AD
3.3V
FRONT_IR
SP1
-15V
15V
VFD CE
VFD SCL
VFD SDA
Spare
I2C_SCL
I2C_SDA
0R246
0
R247
3.3V BU
3.3V BU
5V
3.3V BU
Spare
VOL_SCL
VOL_SDA
Data Out
Converted
No Data
LIGHT_CTL_IN
ON
LIGHTS OFF
NetTie1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
FACTORY DIAGNOSTICS
J9:18
J9:17
J9:16
J9:15
J9:14
J9:13
J9:12
J9:11
J9:10
J9:9
J9:8
J9:7
J9:6
J9:5
J9:4
J9:3
J9:2
J9:1
J7-11
J7-10
J7-2
J7-3
J7-4
J7-5
J7-6
J7-7
J7-8
J7-9