Ic Block Diagrams - Sony MCE-K550 Service Manual

MCE-K550/K750

6-12. IC BLOCK DIAGRAMS

IC509 BU6257AFV-E2
CLK 1
DATA INPUT
CS 2
SHIFT REGISTER
DATA 3
CHARACTER HORIZONTAL WRITE CHARACTER
SIZE ADDRESS ADDRESS
REGISTER REGISTER COUNTER
RESET 4
HORIZONTAL HORIZONTAL HORIZONTAL
SIZE POSITION ADDRESS
COUNTER COUNTER COUNTER
VDD 5
VERTICAL
CKOUT 6 ADDRESS
COUNTER
OSCOUT 7 VERTICAL VERTICAL VERTICAL
SIZE POSITION ADDRESS
COUNTER COUNTER COUNTER
OSCIN 8
OSCILLATION
CIRCUIT
CHARACTER
TEST GENERATOR
TEST 9
CIRCUIT ROM
12X18-BIT
X255-WORD
VSS 10
IC302 L78LR05D
INPUT 1 5 OUTPUT
START
Vref PROTECTOR
UP
ERROR
AMP
RESET
4
OUT
Cd 2 RESET
VO
DETECTOR
3 GND
— 38 —
IC510 CXD2721Q-1
20 HSYNC
PROTECTION
CIRCUIT
19
VSYNC
VIDEO RAM
18
COLOR CHARACTER VB
DATA DATA DATA
3-BIT 3-BIT 8-BIT
x x x
288 288 288
17 VG
WORD WORD WORD
16 VR
15
BACKGROUND DISPLAY VBLK
CONTROL CONTROL
DATA DATA
REGISTER REGISTER
14 VC2
13 BLK2
12 VC1
11 BLK1
IC511 CXD1913Q
51
F1 52
IC513 SN74HC74ANS
VDD 53
XTEST4 54
14 13 12 11 10 9 8
XRST 55
VCC
PR
D Q
SYSCLK 56
CK
Q
CLR
PDCLK 57 1/2
VSS 58
PR
VSYNC 59
D Q
HSYNC 60
CK Q
SO 61
CLR
FID 62
GND
VDD 63
1 2 3 4 5 6 7
XIICEN 64
4
1-4 5
-
50 49 48 47 46 45 44 43 42 41 40
3
BURST FLAG
SYNC Gen. CSYNC SYNC Slope
and Gen.
Sub Carrier
Timing Controller TEST MODE
Gen.
SIO and I 2 O-Bus
Closed Caption Encoder
Controller (for NTSC)
Y 10bit
Delay
Dempx,
DAC
Level
Translator
U Y, C/
and LPF
Y, U, V 10bit
Interpolator CHROMA
selector and DAC
Modulator
4 : 2 : 2 to Interpolator
V
4 : 4 : 4 LPF
10bit
8
DAC
8
4
6-9 10 11-18 19
- -
— 39 —
IC701 LC75725E
-
37-39 36 35 34 33
IC501 LB1641
T.S.D
MOTOR
DRIVE
32 CO
31 AVSS3
30 AVDD3
29 YO
1 2 3
28 AVSS2
27 AVDD2
26 VG
25 VB
24 COMPO
23 AVSS1
22 AVDD1
21 VREF
20 IREF
O.C.P
MOTOR
DRIVE
FWD/REV/STOP
CONTROL LOGIC
4 5 6 7 8 9 10
— 40 —