Sony ICD-CX50 Service Manual page 32

ICD-CX50
• IC Block Diagrams
– MAIN Board –
IC5201 RX-4591CF
32.768kHz
1
VDD
DIVIDER
OSC
FOE 2
FOUT
CONTROLLER
INTERRUPTS
/IRQ 3
CONTROLLER
DI
DO BUS
4
T1
INTERFACE
CLK
CIRCUIT
CE
FOUT 5
IC7541 MAX1926ETC+T
12
+
4.5V
XCHG 1
HV
DRIVER
10mA
+
REF
STATE
EN 2 MACHINE AND
TIMERS
TEMP FAULT
353µA 49µA
THRM 3
REF
ICD-CX50
CE
10
CE
CLOCK
AND
CALENDAR
CLK
9 CLK
TIMER
REGISTER
ARARM DO
8 DO
REGISTER
CONTROL
REGISTER DI
7
DI
AND
SYSTEM
CONTROLLER
6 GND
11 10
9 PGND
3V_ANA
REGULATOR
3V_DIG
8 GND
PREQUAL1
4mA
BATT>2V
+
7
BATT
+
REF/8
+ REF/10
1>12%
REF
BATT>2V
+
REF
BATT>3V
+
REF
+
REF
BATT>4.35V +
REF
osc
4 5 6
– SWITCH Board –
IC6301 WM8750LSEFL/R
32 31 30 29
MUX
CLOCK
MCLK 1
CIRCUTRY
DCVDD 2
DBVDD 3
DGND 4
DCLK 5
DACDAT 6
DACLRC 7
ADCDAT 8
MUX
-1
9 10 11
32 32
28 27 26 25
MUX MUX MUX
DIFF.
INPUT
L1-R1 or
PGA PGA
L2-R2
+MIC +MIC
BOOST BOOST
ANALOGUE
MONO MX
ADC ADC
DIGITAL FILTERS, VOLUME,
DIGITAL MONO MIX, 3D ENHANCE
DIGITAL FILTERS,
GRAPHIC EQUALISER, BASS BOOST
DAC DAC
RIGHT MONO LEFT
MIX MIX MIX
ROUT MONO LOUT1
VOL VOL VOL
-1
12 13 14 15
24 LINPUT3
23 RINPUT3
22 MICBIAS
21 VMIO
+
20 VREF
19 AGND
18 AVDD
17
HPVDD
16