BU38603 Datasheet, PDF (6/7 Pages) Rohm – System control servo

Video ICs
BU38603 / BU38703 / BU38803
10 22 43
Iadin
A
A _SW1
V1
B
C
TEST pin (2-9)
D/A
23
1
10 64
•^{Application example}
Serial bus
CSYNC
Pseudo VSYNC
Count pulse
Fig.3
8MHz
Capstan control Drum control
Control
SI / O
Interrupt
PI / O
CPU ROM / RAM
Timer FRC Data shift
VHPULSE
Watchdog
Servo mode
PWM
Head amplifier
· chroma
Pattern generator
Linear time counter
A/D
VISSVASS
Amplifier gain control
RESET
CFG. CTL divider
DFGAMP
DPG
CFGAMP
REF
voltage
CTLAMP
ENVIN
Head amplifier SW
Chroma rotary SW
AHSW
VHSW
CTL coil
DFG DPG CFG
Fig.4
6