MC-S50
20
20
1
2
3
4
5
6
7
8
SERIAL
PORT
DE-
EMPHASIS
HEADPHONE
AMP
DIGITAL
FILTERS
∆∑
DAC
ANALOG
FILTER
DIGITAL
VOLUME
CONTROL
BASS/TREBLE
BOOST
LIMITING
ANALOG
VOLUME
CONTROL
∆∑
DAC
ANALOG
FILTER
ANALOG
VOLUME
CONTROL
14
13
16
15
12
11
10
9
CONTROL PORT
LRCK
SDATA
SCLK
VD/IO
MCLK
SCL
VQ HP
REF GND
HP B
VA HP
RST
SDA
VA
GND
HP A
FILT+
8
15
16
10
14 13 12 11
G
A
B
Y0 Y1 Y2 Y3
9
6
7
4
5
2
3
1
G
A
B
Y0 Y1 Y2 Y3
VCC
2G (ENABLE)
2Y0
2Y1
2Y2
2Y3
2A
2B
1Y0
1Y1
1Y2
1Y3
1A
1B
GND
1G (ENABLE)
SELECT DATA OUTPUTS
SELECT DATA OUTPUTS
–
+
–
+
1
2
3
4
5
REFERENCE
LOW-BATTERY
COMPARATOR
ERROR
AMP
Q
ONE-SHOT
TRIG
–
+
EN
8
7
6
S
Q
R
F/F
+
–
ZERO CROSSING
AMP
Q
ONE-SHOT
TRIG
MINIMUM
OFF-TIME
ONE-SHOT
MAXIMUM
ON-TIME
OFF-SHOT
CURRENT-LIMIT
AMP
LBI
FB
REF
LBO
OUT
LX
GND
SHDN
+
–
+ –
CONTROL
AND
DRIVER
LOGIC
+
–
+
–
+ –
+ –
CHIP
SUPPLY
+
–
+
–
+
–
FB
REF
SLOPE COMPENSATION
+
–
+
–
+ –
FB
REF
40mV
OVERVOLTAGE
COMPARATOR
PWM ON
SIGNAL
SYNC
CELL
RAMP
GEN
REFERENCE
VOLTAGE
PWM
PGND
LX
SHDN
SYNC/
PWM
LIM
10
9
8
7
6
0.1X
SENS
FET
0.1X
SENS
FET
5mA 2N PFM
ADJ.IN PWM
PFM CURRENT
COMPARATOR
LIM
COMPARATOR
NEGLIM
COMPARATOR
12mV
120mV
PWM
COMPARATOR
REF
ON
PFM
COMPARATOR
IN
BP
GND
REF
FB
1
2
3
4
5
P
N
• IC Block Diagrams
– POWER Board –
IC401
MAX1674EUA-TG069
IC404
MAX1692EUB-TG069
– LOGIC Board –
IC604
SN74LV139ADGVR
IC901
ML60851CLBZ060 (Not supplied part)
– AUDIO Board –
IC302
CS4343-KSR
1
32
33
31 30 29 28 27 26 25
24 23
34
35
36
37
38
39
40
41
42
43
44
1
2
3 4 5 6
7
8 9 10 11
22
21
20
19
18
17
16
15
14
13
12
END POINT FIFO/
8BYTE SET-UP
REGISTER
STATUS/
CONTROL
PROTOCOL
ENGINE
USB
TRANSCEIVER
DPLL
OSC
APPLICATION
INTERFACE
DREQ
AD7
AD6
AD5
AD4
GND
VCC5
AD3
AD2
AD1
AD0
D+
D
–
VCC3
TEST1
TEST2
XIN
XOUT
CS
RD
WR
RESET
INTR
D15
D14
D13
D12
GND
VCC5
D11
D10
D9
D8
ALE
ADSEL
A7
A6
A5
A4
A3
A2
A1
A0
DACK