Yamaha DSP-AX2 Service Manual page 39

IC610 : LC74781-9798 (VIDEO P.C.B.)
Superimpose
CS
SERIAL
SIN
COMMAND
PARALLEL
DECODER
CONVERSION
SCLK
RST
VDD1
VSS1
VDD2
CHARA
CHARACTER
OSC IN
OUTPUT
DOT CLOCK
OSC OUT
GENERATOR
SYN IN
SYNCHRONOUS
SEP C
SEPARATION
SEP OUT
SEP IN
CTRL3
1
VSS1
XTAL IN 2
XTAL OUT 3
4
CTRL1
BLANK 5
6
OSC IN
OSC OUT 7
8
CHARA
CS 9
SCLK 10
11
SIN
VDD2 12
8 BIT
LATCH
+
HORIZONTAL
VERTICAL DIRECTION
DIRECTION
CHARACTER SIZE
CHARACTER SIZE
REGISTER
REGISTER
HORIZONTAL VERTICAL
SIZE COUNTER SIZE COUNTER
SYNCHRONOUS
DISTINCTION
TIMING
GENERATOR
COMPLEX
SYNCHRONOUS
SIGNAL
SEPARATION
CONTROL
CTRL
2
24
VDD1
23 RST
22 CTRL3
21
CTRL2
20 SEP IN
19
SEP OUT
18 SEPC
17
SYN IN
16 VDD1
15 CV IN
14
NC
13 CV OUT
HORIZONTAL VERTICAL FLASHING &
DISPLAY DISPLAY CONVERSION
POSITION POSITION CONTROL
REGISTER
REGISTER REGISTER
FLASHING &
HORIZONTAL VERTICAL
CONVERSION
DOT COUNTER DOT COUNTER
CONTROL
CIRCUIT
HORIZONTAL VERTICAL
DISPLAY POSITION DISPLAY POSITION
DETECTION DETECTION
LINE
CHARACTER
CONTROL
CONTROL
COUNTER COUNTER
CHARACTER OUTPUT CONTROL
SYNCHRONOUS
SIGNAL BACKGROUND CONTROL
VIDEO OUTPUT CONTROL
GENERATOR
CTRL XTAL XTAL BLANK
1 IN OUT
DSP-AX2
RAM
DISPLAY
WRITE
CONTROL
ADDRESS
REGISTER
COUNTER
DISPLAY
DECODER
RAM
DECODER
FONT ROM
SHIFT
REGISTER
CV CV
IN OUT
38