Sony MZ-R91 Service Manual page 29

IC804 RV5C348A-E2
32KHz
32K OUT
1
OUTPUT
CONTROL
SCLK
2
I/O
CONTROL
SO
3
SI
4
VSS 5
IC901 MPC18A31FTA
48
DCIN VB DCIN
DCIN 1
2
RS
3
INM5
DCIN
+ +
–
RF5 4
BATM 5
INM3 6
INP3 7
VREG
+
RF3 8
–
9
FB
+
VREG 10
–
RF4
VLD 11
VR 12
13 14 15
ALARM W REGISTER
COMPARATOR W
(WEEK,MIN,HOUR)
ALARM D REGISTER
COMPARATOR D
(MIN,HOUR)
TIME COUNTER
(SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR)
ADDRESS
ADDRESS
DECORDER
REGISTER
SHIFT REGISTER INTERRUPT CONTROL
47 46 45
BANDGAP
REFERENCE
VC
+
+
–
–
STEP-UP
DC/DC
CONVERTER
16 17 18 19 20 21 22
VOLTAGE
DETECT
DIVIDER
DIV
CORRECTION
OSC
DETECT
44 43 42 41 40
VC
VC
+ –
RF1
VR
VC
RF2
23 24
– 45 –
10
VDD
9
OSC IN
OSC
8 OSC OUT
7
CE
/INTR
6
39 38 37
FFCLR
XRST
SYSTEM
CONTROL
VC VB
SAW
OSC2
VC
VC VG
STEP-UP
PWM
PRE DRIVER
VC VG
STEP-UP
PWM
PRE DRIVER
36 SLEEP
35 XWK1
34 XWK2
33 XWK3
32 XWK4
31 VCIN
30 VC
29 VCON
28 L1
27 PGND
26 L2
25 VROUT