STV6889 Datasheet, PDF (46/56 Pages) STMicroelectronics – HIGH-END I²C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR

STV6889
Figure 17. Safety functions - block diagram
BSafeEn
I²C
B-drive protection at H-unlock
H-lock detector
HBOutEn
I²C
V_CC
+
V_CCEn
_
V_CCDis
BMute I²C
V_CC supervision
H-VCO
discharge
control
0 = Off
1 = On
= start
= stop
HPosF
10
(timing)
SOFT
START & STOP
INHIBITION
CONTROL
PLL1
PLL2
DC/DC
XRayReset
I²C
XRay
25
+
V_ThrXRay
_
V_CC
+
_
V_CCXRayEn
In ^:2 Out
Enable
RQ
S
B-drive inhibit
H-drive inhibit
XRayAlarm
I²C
H-drive inhibition
(overrule)
HFly
12
+
_
V_ThrHFly
VOutEn
I²C
BlankMode
I²C
V-drive inhibition
B-drive inhibition
HLockEn
I²C
H-lock detector
V-sawtooth
discharge
V-sync
RQ
S
S ^{L1=No blank/blank level}
L2=H-lock/unlock level
HLckVBk
3
L3=L1+L2
HLock
I²C
I²C I²C bit/flag
Int. signal
X Pin
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