Toshiba 29VH27D, Service Manual

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13
– soft limiter (gamma correction)
– color transient improvement
– programmable RGB matrix
– picture frame generator
– two analog RGB/Fast-Blank inputs. The DDP 3310B is a single-chip digital Display and Deflection
Processor designed for high-quality back-
Deflection processing
– scan velocity modulation output
– high-performance H/V deflection
– EHT compensation for vertical / East/West
– soft start/stop of H-Drive
– vertical angle and bow
– differential vertical output
– vertical zoom via deflection
– horizontal and vertical protection circuit
– adjustable horizontal frequency for VGA/SVGA display
Miscellaneous
– selectable 4:1:1/ 4:2:2 YC
r
C
b
input
– selectable 27/ 32-MHz line-locked clock input
– crystal oscillator for horizontal protection
– automatic picture tube adjustment (cutoff, white-drive)
– single 5-V power supply
– hardware for simple 50/60-Hz to 100/ 120-Hz conversion (display frequency doubling)
– two I
2 C-controlled PWM outputs
– beam current limiter
14.8.3.Pin connection and short descriptions
NC = not connected LV = if not used, leave vacant
X = obligatory; connect as described in circuit diagram IN = Input
OUT = Output SUPPLY = Supply Pin
Pin no
PLCCK 68 pin Pin name Type Connection
(if not used) Short description
1 VSUPP SUPPLY X Supply voltage, Output pin driver
2 GNDP SUPPLY X Ground, Output pin driver
3 VS2 IN GNDD Additional VSYNC input
4 FIFORRD OUT LV FIFO Read counter reset
5 FIFORD OUT LV FIFO Read Enable
6 FIFOWR OUT LV FIFO Write Enable
7 FIFORWR OUT LV FIFO Write counter reset
8 HOUT OUT X Horizontal Drive Output
9 HFLB IN Hout Horizontal Flyback Input
10 SAFETY IN GNDO Safety Input
11 VPROT IN GNDO Vertical protection Input
12 FREQSEL IN X Selection of H-Drive Frequency Range
13 CM1 IN X Clock select 40.5 or 27/32 MHz
14 CMO IN X Clock select 27/32 MHz
15 RSW2 OUT LV Range Switch2, Measurement ADC
16 RSW1 IN/OUT LV Range Switch1, Measurement ADC
17 SENSE IN GNDO Sense ADC Input
18 GNDM SUPPLY X Ground, MADC Input
19 VERT+ OUT GNDO Differantial Vertical Sawtooth Output
20 VERT- OUT GNDO Differantial Vertical Sawtooth Output
21 EW OUT GNDO Vertical Parabola Output
22 XREF IN X Reference Input for RGB DACs
23 SVM OUT VSUPO Scan Velocity Modulation
24 ROUT OUT VSUPO Analog Output Red
25 GOUT OUT VSUPO Analog Output Green
26 BOUT OUT VSUPO Analog Output Blue
27 GNDO SUPPLY X Ground, Analog Back-end
28 VSUPO SUPPLY X Supply Voltage, Analog Back-end