Sharp 70GS-61SC, Руководство по обслуживанию

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29
70GS-61SC
ICs ADITIONAL INFORMATION: VCT3811 (IC1001)
Absolute Maximum Ratings
Symbol Parameter Pin Name Min. Max. Unit
T
A
Ambient Operating Temperature
−
65
°
C
T
C
Case Temperature (PSDIP64)
−
115
°
C
T
C
Case Temperature (PMQFP128)
−
115
°
C
T
S
Storage Temperature
−
40 125 °C
P
TOT
Total Power Dissipation
−
1400 mW
VSUP
x
Supply Voltage VSUP
x
−
0.3 6 V
V
I
Input Voltage, all Inputs
−
0.3 VSUP
x
+0.3
1)
V
V
O
Output Voltage, all Outputs
−
0.3 VSUP
x
+0.3
1)
V
V
IO
Input/Output Voltage, all Open Drain Out-
puts
−
0.3 6 V
Block diagram of the VCT 38xxA (shaded blocks are optional)
Video
Front-end
Comb
Filter
Color
Decoder
Display
Processor
Video
Back-end
Panorama
Scaler
4
3
4
12
31
2
I
2
C Master
16 kB
Text RAM
3 kB
OSD
96 kB
CPU ROM
TPU
DMA CPU
24 IO Ports
Watchdog
2 CapCom
2 Timer
15:1 Mux
10-bit ADC
8-bit PWM
Audio
3
2
Clock
Oscillator
1 kB
CPU RAM
XTAL1
XTAL2
VIN
AIN
Px
y
ADB, DB, CB
RGBOUT
RGBIN
VE
R
T
PR
O
T
HFLB SE
N
S
E
I
2
C
XR
E
F
HOUT VR
D
VR
T
SG
N
D
Color, Prio
MSync
I
2
C
VSUPAB
VS
U
PP1
GN
D
P
1
Reset
Logic
RESQ
VS
U
P
S
TEST
GNDAB
VS
U
P
A
F
VS
U
P
D
GND
A
F
GNDD
RS
W
2
GNDM EW
8
14-bit PWM
2 2
3
CIN
SVM
V
ideo
GNDS
CLK20
RDY
BE
24 kB
VCT 38xx
AOUT
VSync
VOUT
24 kB ROM
3 kB
OSD RAM
Pict.Improv.