3.3
、
system control process
:
After connect the AC power input (we use 3 pins power jack
,
the GND pin must ground
well).first of all ,standby power works
,
signal mainboard takes 5V-ST power supply
,
the
powers of PW113 begin to work
,
LED turns red. Resetting after V18
、
V33 power is normal
,
PW113 initializes the system
,
sends STANDBY
(
L
)
signal
,
which controls main power begins to
work
,
other power VT9
、
VT5
、
AVCC
、
PVDD
、
AVDD
、
OVCC
、
CVCC
、
PVCC
、
DAVCC
、
AVDD
、
AVCC
、
DVDA
、
PVDD also work normally.MST9885
、
VPC3230
、
SiI161B
、
DS90CF383
take proper power supply. Moreover LED signal control LED to turn yellow and glitter
,
it is said
that it controls normally
。
At last LVDSON signal from 43pin of PW113is high
,
it let
DS90CF383 begin to work
。
After this it is in normal work state
,
input source is last time
source before power off
。
3.3.1
、
when choice VGA mode by remote device
,
PW113 controls MST9885 by I
2
C
bus
,
enable SiI161B and VPC3230
,
let them work in low consume mode
,
which can save power
and reduce interfere
。
At the moment VGASEL signal from PW113 output parks VGA input
channel in PI5V330. If VGA signal inputs, MST9885 outputs Horizontal and Vertical Sync
signal and data signal
,
and send to PW113
,
which outputs format commutation data . After
DS90CF383(DS transmitter)
,
it transforms to the signal fitting the PDP panel demand
;
because
SiI161B
、
DS90CF383 both in normal work state
,
when DVI signal inputs, display video
;
if no
VGA signal
,
MST9885 can not output digital Horizontal and Vertical Sync signal
,
after examined
by PW113,displays pc icon on the left and top of PDP panel
,
other part display black. If no
input after 60 sec, it hints to enter
“
save power mode
”
。
At the moment , MST9885 in normal
work state
,
examines VGA signal ceaselessly
,
so it can arouse automatically in VGA mode. It is
said that when VGA signal inputs, it can work normally from standby state
。
3.3.2
、
when in TV
/
AV
/
YCbCr mode by remote device
,
PW113 controls VPC3230 by
I
2
Cbus
,
otherwise PW113 controls MST9885 on the fly
(
output in high impedance state
)
by
I
2
Cbus.Because tuner N901
、
VPC3230
、
DS90CF383 all in normal work state
,
when video
signal inputs
,
PDP panel display normally
;
if no video signal input
,
under the control of PW113
,
PDP panel displays blue background
,
if no signal 15 mins
,
power off automatically and into
standby state. It can not arouse automatically
。
3.3.3
、
When in DVI(digital RGB) mode by remote device
,
PW113 controls SiI161B
,
and
enables VPC3230
,
and let it working in low consume mode
,
otherwise PW113 controls MST9885
on the fly
(
output in high impedance state
)
by I
2
C bus
,
because SiI161B
、
DS90CF383 both in
normal work state
,
when DVI signal inputs, display video
;
if no DVI signal
,
SiI161B do not
output digital Horizontal and Vertical Sync signal
,
after examined by PW113,displays DVI icon
on the left and top of PDP panel
,
other part display black. If no input after 60 sec, it hints to
enter
“
save power mode
”
work state
。
At the moment ,SiI161B in normal work state
,
examines
DVI signal ceaselessly
,
so it can arouse automatically in DVI mode. It is said that when DVI
signal inputs, it can work normally from standby state
。
37
Содержание H-PDP4201
Страница 14: ...PW113 Block Diagram 14 ...
Страница 18: ...18 ...
Страница 19: ...PW1235 Block Diagram 2 2 5 TA2024 general 19 ...
Страница 23: ...DS90CF383 Block Diagram 23 ...
Страница 26: ...26 ...
Страница 51: ...Annex 1 装配图 51 ...
Страница 52: ...Annex 2 52 ...
Страница 53: ...电源滤波器组件 内 联 电 源 线 主板组件 按键板组件 板组件 53 ...