Sony BVP-550, Maintenance Manual, Page: 609 / 924

6-27
IC
BVP-550
UPD6453GT-610(NEC)FLAT PACKAGE
C-MOS ON-SCREEN CHARACTER DISPLAY
—TOP VIEW—
V
DD
(+5V)
1
2
3
4
5
6
7
BUSY
CLK
CS
DATA
PCL
CK
OUT
OUT
OSC
IN
OSC
8
14
15
16
17
18
19
20
13
GND
4
2
20
12
13
14
DATA
H SYNC
19
V SYNC
8
9
5
PCL
OSC OUT
OSC IN
VR
VG
VB
CK OUT
MP
V CBL
R BLK
G BLK
H SYNC
BUSY
V SYNC
INPUT
CLK
CS
DATA
H SYNC
OSC IN
PCL
V SYNC
OUTPUT
B
BLK
, R
BLK
, G
BLK
BUSY
CK OUT
MP
OSC OUT
V
R , V G , V B
V
CBL
CLOCK
CHIP SELECT
SERIAL DATA
HORIZONTAL SYNC
OSCILLATOR IN
POWER ON CLEAR
VERTICAL SYNC
B, R, G, BLANKING
BUSY OUT
CLOCK
MASK PULSE
OSCILLATOR OUT
R, G, B, CHARACTER DATA
VIDEO CUT BLANKING
;
;
;
;
;
;
;
;
;
;
;
;
;
;
V CBL
R BLK
G BLK
B BLK
VB
VG
VR
MP
9 12
10 11
7
11
15
16
B BLK
17
18
1
3
CS
VIDEO RAM
CHARA
DATA
8-BIT
x
288 WORD
COLOR
DATA
3-BIT
x
288 WORD
BLINK
DATA
1-BIT
x
288 WORD
DATA
SELECTOR
OUTPUT CONTROL
MP VR VG VB VCBL
11 12 13 14 15
16
17
18
R BLK
G BLK
B BLK
CHARACTER
GENERATOR
RAM
12x18-BIT
x
16 WORD
CHARACTER
GENERATOR
ROM
12x18-BIT
x
240 WORD
BACKGROUND
CONTROL
DATA
REGISTER
DISPLAY
CONTROL
DATA
REGISTER
6
10
V
DD
V
SS
V
ADDRESS
COUNTER
V
POSITION
COUNTER
V
SIZE
COUNTER
TIMING
GENERATOR
SYNC
PROTECT
CIRCUIT
OSC
CIRCUIT
V
ADDRESS
REGISTER
WRITE
ADDRESS
COUNTER
H
ADDRESS
COUNTER
H
ADDRESS
REGISTER
H
POSITION
COUNTER
CAHRA
SIZE
REGISTER
H
SIZE
COUNTER
H SYNC
V SYNC
20
9
8
OSC OUT
OSC IN
COSC OUT COSC IN
L OSC
19
CK OUT
CLK
7
2
CS
3
BUSY
1
DATA
4
DATA
BUFFER
REGISTER
DATA INPUT
SHIFFT
REGISTER
INSTRUCTION
DECODER
CONTROL
SIGNAL
UPD6453GT (2/2)