Sony BVP-550 Maintenance Manual page 609

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