NAD L75 - Page 20

2-21
ANAM 2024V (OSA IC25)
CS
8 9 10 15 11 12 13 14 30 17 1 29 27 28 26 24 25 23 19
4 7 2 3 5 6 19 18 16
20 21
Serial- parallel converter
8-bit latch and command decoder
Horizontal character size register
Horizontal size counter
Vertical character size register
Vertical size counter
Horizontal display position register Horizontal display position detection
Character control counter
Line control counter
Horizontal dot counter
Vertical display position register
Vertical display position detection
Vertical dot counter
Flashing/ reversal control register
Flashing/ reversal control register
Display control register
RAM write address counter
Composite synchro- nization signal control
Composite synchro- nization signal separa- tor control
AFC
circuit
Sync separator
Sync detector
HSYN
OUT
VSYN
OUT
Xtal
IN1
Xtal
IN2
Xtal
OUT1
Xtal
OUT2
CV
CR
CV
IN
CV
OUT
Timing generator
Synchronizztion signal generator
Shift register
Font ROM
Decoder
Display RAM
Decoder
Character output control Background control Video output control
SCLK
SIN
RST
SECAM
525/625
NTSC/PAL
3.58/4.43
VDD1 VDD2
VSS
22
VSS
SYNCDET
VCO
IN
VCO
OUT
AMP
IN
PD
SYN
SEPc
IN
AMP
OUT OUT
FC