Toshiba 29VH27E, Service Manual

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11
• Signal manipulations
- Insertion of coloured background
- Vertical and/or horizontal windowing with four different speed factors
- Flash generation (for supervising applications, motion flag readable by I²C bus)
- Still frame or field
- Support of split screen applications
- Multiple picture display - Tuner scan (4 and 16 times for 4:3, 12 times for 16:9 tubes)
- Support of multi picture display with PIP or front -end processor with integrated scaler
(e.g. 9 times display of PIP pictures, picture tracking, random pictures, still-in-moving picture, moving-
in-still picture)
• I²C-bus control (400 kHz)
• P-MQFP-64 package
• 3.3 V ± 5% supply voltage
14.6.3.Pin Definition
Pin No. Name Type Description
2,8,24,42,55 VSS1 S Supply voltage ( V SS = 0 V )
9,25,41,56 VDD1 S Supply voltage ( V DD = 3.3 V )
36,52,58 VSS2 S Supply voltage ( V SS = 0 V )
35,51,53,57,59 VDD2 S Supply voltage ( V DD = 3.3 V )
43,..,50 YIN0...7 I/TTL Data input Y (see input data format)
31,..,34;37,...,40 UVIN0...7 I/TTL
PD Data input UV (for 4:2:2 parallel, see input data format)
(for CCIR 656, see input data format)
30 RESET I/TTL System reset. The RESET input is low active. In order to ensure
correct operation a "Power On Reset"
must be performed. The
RESET pulse must have a minimum duration of two clock periods
of the system clock CLK1.
23 HIN I/TTL
PD H-Sync input
(only for full CCIR 656)
22 VIN I/TTL
PD V-Sync input
(only for full CCIR 656)
29 SYNCEN I/TTL Synchronization enable input
21 SDA I/O I
2
C-Bus data line (5V ability)
20 SCL I I I
2
C-Bus clock line (5V ability)
54 CLK1 I/TTL System clock 1
17,..,10 UVOUT0...7 O/TTL Data output UV (see output data format)
7,..,3;1;64;63 YOUT0...7 O/TTL Data output Y (see output data format)
62 HREF O/TTL Horizontal active video output
61 VOUT/
VEXT I/O/
TTL EXSYN=0 (I²C-bus parameter): V-Sync output
EXSYN=1: External V-Sync input for output part
60 HOUT/
HEXT I/O/
TTL EXSYN=0 (I²C-bus parameter): H-Sync output
EXSYN=1: External H-Sync input for output part
18 INTERLACED O/TTL Interlace signal for AC coupled vertical deflection
28 X1 / CLK2 I/TTL Crystal connection / System clock 2
27 X2 O/AN Crystal connection
26 CLKOUT O/TTL Clock output (depends on I²C parameters CLK11EN, CLK21EN,
FREQR)
19 TEST I/TTL Test input, connect to V SS for normal operation
14.7.LM317T
14.7.1.Description
The LM317T is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5
amps over an output range of 1.25 to 37 volts. This voltage regulator is exceptionally easy to use and
requires only two external resistors to set the output voltage. Further, it employs internal current limiting,
thermal shutdown and safe area compensation, making it essentially blow–out proof. The LM317
serves a wide variety of applications including local, on card regulation. This device can also be used to
make a programmable output regulator, or by connecting a fixed resistor between the adjustment and
output, the LM317 can be used as a precision current regulator.
14.7.2.Features
• Output Current in Excess of 1.5 A