McIntosh C2600 Service Manual page 13

3 DIGITAL
751731 SCH 2 of 3
USB INPUT
1
PWR
2 USB DM
D-
3 USB DP
D+
4
GND
5
CASE
6
CASE
J1
R1 C3 R3
47.5 1000pF 47.5
C4 L1
.1µF
GP1
R119
0
4-40
90OHM
R120
0
D1 D2
Y1
24MHz
1 3
R4
47.5k
U1
C2
12pF
1 16
XOUT XIN
2 15 C5
S0 NC
12pF
3 14
S1 S3
4 13
S2 VDD2
5 12
VDD1 GND2
6 11
C6 C7
GND1 NC
.1µF .1µF
7 10
NC NC
C1
8 9 12MHz
CLK REF
.1µF
CLOCK GENERATOR
R2
22.1
J2
1 2
USB - USB +
3 4
TCK TCK GND
5 6
TMS TMS GND
7 8
TDO
TDO GND
9 10
TDI TDI GND
11 12
DBUG RX TXD GND
13 14
DBUG TX RXD NRST USB RST
15 16
TST +3.3V +3.3VM
+3.3VBU
C12 1 USB AUDIO
U2 .1µF 0 MAIN MICRO
1 DETACHED
0 ATTACHED
10 1
VDD SEL USB 1/2
9 2
USB OE OE HSD1+ USB1 +
8 3
USB1 - HSD1- HSD2+
7 4
HSD2- D+
6 5
D- GND
USB SWITCH
C19
+3.3VD +1.8VUSB 10µF
C17
.1µF
L2
C13
.1µF
C14
100µF
C10
.1µF
R6
22.1
C11
C8 10µF
47µF R5
17
22.1 GND
18
X1
19
XO
20
VDD18
21
VDD
22
GND
23
GND
24
VDD
25
GND
26
VDD
27
GPIO0
28
VDD18
29
VDD
R11 10k 30
GPIO1
R12 10k 31
GPIO2/USB(HS/FS)SEL
32
GPIO3
C15
.1µF R18
10k
C16
.1µF
C18
.1µF
+3.3VD +3.3VD +3.3VD +3.3VD
C9
U3
.1µF
R13 R15
10k 10k
1 8
A0 VCC
R16
2 7
A1 WP 100
3 6
A2 SCL
4 5
GND SDA
R17
100
+3.3VD +3.3VD +3.3VD +3.3VD +3.3VD
10k 10k 10k 10k 10k
R7 R8 R9 R10 R14
21
C2600
1 DSD 128
DSD128 FL
0 DSD 64
DS2
1 DSD
DSD FL
R29
0 PCM
33.2k
USB ON
+3.3VD
U6 SOF
R22
1
Vcc 33.2k
SOF 4
2
GND +3.3VD
COAX 2
DS1
COAX 1 +3.3VD
+3.3VD +3.3VM
L5
L3 L4 3.3µH
C22
10µF
C21 C23
.1µF .1µF
64
TEST6
63 C24
TEST5
.1µF
62
TEST4
61
TEST3
60
TEST2
59
TEST1
58
VDD18
57
REFCLKIN
U4
56
VDD R30
55 R23 10k
SDA1 33.2k
54 R24 10k
SCL1
R25 10k
53
LRCLK1
52
VDD
51 R26 10k
MCLK1
50 R27 10k
SDATA10
R28 10k
49
SCLK1
MUTE
C20
.1µF
10
9
4
6
U5:2 USB DSDR
5
+3.3VD
U7
1
DSD FL Vcc
4
+3.3VD 2
MCT ON GND
1 Vcc
3
U5:1 USB DSDL
2
GND
12
13
GPIO0
GPIO6
GPIO5
GPIO4
GPIO3
+3.3VD +3.3VD +3.3VD +3.3VD
+3.3VD
U8
U10
1
Vcc
1 16
4
A0 VDD
2
2 15
GND A1 SDA I2C DA
3 14
A2 SCL I2C CL
4 13
Q0 NC
5 12
Q1 Q7
6 11
Q2 Q6
7 10
Q3 Q5
8 9
R31 VSS Q4
DS4
33.2k
A = 0 0 0 (0)
R32
DS5
33.2k
R34
1.5k
R35 22.1
C30
12pF
R36 22.1
C31
Y2 12.00MHz
12pF
+1.2VM
C32
.1µF
C27
.1µF
R38
1k
1 48
ADVREF PA0/PGMEN0
2 47
GND PA1/PGMEN1
3 46
PB0/AD4 GND
4 45
PB1/AD5 VDDIO
5 44
PB2/AD6 PA2/PGMEN2
6 43
PB3/AD7 PA3
7 42
VDDIN PA30
8 41
VDDOUT PA29
9 U9 40
PA17/PGMD5/AD0 TST
10 39
PA18/PGMD6/AD1 NRST
11 38
PA21/PGMD9/AD8 PA28
12 PA27/PGMD15 37
VDDCORE
13 PA4/PGMNCMD 36
PA19/PGMD7/AD2
14 35
PA22/PGMD10/AD9 PA5/PGMRDY
15 34
PA23/PGMD11 PA6/PGMNOE
16 33
PA20/PGMD8/AD3 TDI/PB4
C33
.1µF
8
U5:3 USB I2SLRCK
USB DISPLAY
+3.3VD
C29
.1µF
1 x x x x
0 x 0 x 0
0 x 0 x 0
0 x 0 x 0
11
U5:4 USB I2SDATA 0 x 0 x 1
0 x 0 x 1
0 x 0 x 1
0 x 0 x 1
0 x 0 x 1
0 x 0 x 1
0 x 1 0 x
0 x 1 1 x
0 1 1 x 1
22
+3.3VD
U11
DS9
R50
1
Vcc 33.2k
4
MCT ON
2
GND
R39
33.2k
DS6
+3.3VD
OPT 3
R40
33.2k
DS7
+3.3VD
OPT 2
R41
J4
33.2k
DS8
+3.3VD
OPT 1
1
PWR
2
D -
3
D +
4
GND
5
CASE
TCK 6
CASE
TMS
47.5 47.5
R44 R49
TDO
TDI
ERASE
+3.3VM
S1
R43 R45
10k 10k
R42
100
USB RST
J3:17
2
R47
221 DAC RXD
J3:18
2
R48
C35
221 DAC TXD
.1µF J3:16
2
RST
USB1 +
J3:15
USB1 + 2
S2
USB1 -
J3:14
USB1 - 2
C36
.1µF
USB OE
J3:13
USB OE 2
J3:12 USB 1/2
USB 1/2 2
J3:1 +3.3VBU
+3.3VBU 2
J3:9 +3.3V
+3.3VD 2
J3:10
J3:3J3:4 GND
x x x " SILENT "
2
J3:5 J3:6
0 1 0 " 32kHz "
J3:7
0 0 1 " 44.1kHz "
0 0 0 " 48kHz "
1 0 1 " 88.2kHz "
1 0 0 " 96kHz "
0 1 1 " 176.4kHz "
MCT DISPLAY
0 1 0 " 192kHz "
0 0 1 " 352.8kHz "
0 0 0 " 384kHz "
x x x " DSD 64 " 1 x " SILENT "
x x x " DSD 128 " 0 0 " CD "
0 0 x " DSD 256 " 0 1 " SACD "