TDA9381 Datasheet PDF – CPU + Signal Processor – Philips

Part Number: TDA9381

Function: TV Signal Processor-Teletext decoder

Package: DIP 64 Pin

Manufacturer: Philips Electronics ( )


TDA9381 signal processor


This is TV signal processor-Teletext decoder with embedded µ-Controller.

The various versions of the TDA9381 series combine the functions of a TV signal processor together with a m-Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1or 10 page text. The ICs are intended to be used in economy television receivers with 90° and 110° picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins.

Pinout :

TDA9381 datasheet pinout


1. TV-signal processor

(1) Multi-standard vision IF circuit with alignment-free PLL demodulator

(2) Internal (switchable) time-constant for the IF-AGC circuit

(3) A choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF amplifier.


( TDA9351 /  TDA9381 )
Pin Symbol  I/O  Function
1  STAND BY  I/O  Power control & Check,  On=Hi-Z(input),Off=L(output)
4 TUNING  Out  VT output
5 NTSC SW/AC TEST  Out  System
6 KEY  In  Key input
8 MUTE  Out  Mute Output
9  Vss C/P    GND connection
10  BAND1  Out  BAND data output 1
11  BAND2  Out  BAND data output 2
12 VSSA    GND connection
SECAM PLL decoupling
14 VP2  In  8V power supply
15 DECDIG    Digital Decoupling
16 PHL2LF    Phase –2 filter
17 PHL1LF    Phase –1 filter
18 GND3    GND connection
19 DECBG    Bandgap decoupling
20  AVL/EWD  Out   Automatic volume leveling/East-West drive output
21  VDRB  Out   Vertical drive B output
22  VDRA  Out   Vertical drive A output
23  IF1  In  Input terminals for IF signals.
24  IF2  In  Input terminals for IF signals.
25  IREF    Reference current input
26  VSC    Vertical sawtooth capacitor
27  TUNER AGC    Tuner AGC output
28  AUDEEM/SIF1    Audio deemphasis or SIF input 1
29  DECSDEM/SIF2    Decoupling sound demodulator or SIF input 2
30  GND2    Ground 2 for TV processor
31  SNDPLL/SIF AGC    Narrow band PLL filter/AGC sound IF
32  AVL/REFO    Automatic Volume Levelling / Subcarrier  reference output
33 H OUT  Out  Horizontal output
34  FBISO    Flyback input / sand castle output
35  AUDEXT/QSSO    External audio input / QSS  output
36 EHTO    EHT/overvoltage protection input
37 PLLIF    IF-PLL loop fiter
38  IFVO/SVO  Out  IF video output / selected CVBS output
39  VP1    Main supply voltage TV-processor(+8V)
40  CVBSINT  In  Internal CVBS input
41  GND1    Ground 1 for TV-processor
42  CVBS/Y    External CVBS / Y input
43 CHROMA  In  Chrominance input (SVHS)
44  AUDOUT/AMOUT  Out  Audio output /AM audio output (volume controlled)
45 INSSW2  In  2 RGB/YUV insertion input
46 R2/VIN  In  2 R input/ V (R-Y)input
47 G2/YIN  In  2 G input/ U input
48 B2/UIN  In  2 B input/ U (B-Y)input
49  BCLIN    Beam current limiter input/(V-guard input, note2)
50  BLANKING    Blank current input / (V-guard input, note2)
51  R OUT  Out  Red output
52  G OUT  Out  Green output
53  B OUT  Out  Blue output
54 VDDA    Analog supply of Teletext decoder and digital supply of TV-processor (3.3V)
55  VPE    OPT programming voltage
56  VDDC    Digital supply to core (3.3V)
57  OSCGND    Oscillator ground supply
58  XTAL IN  In  Crystal oscillator input
59  XTAL OUT  Out  Crystal oscillator output
60 RESET    Reset
61  VDDP    Digital supply to periphery(+3.3V)
62  AV1  Out  AV switch control signal 1 output
63  AV2  Out  AV switch control signal 2 output
64  IRIN  In  Remote controller signal input

TDA9381 Datasheet PDF

TDA9381 pdf

Other data sheets are available within the file: TDA9381PS/NS, TDA9382, TDA9383,

TDA9384, TDA9385, TDA9386, TDA9387, TDA9388, TDA9389

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RK3026 Datasheet – Dual-Core ARM Cortex-A9 CPU – Rockchip

Part Number: RK3026

Function : Low power, High performance processor solution for tablet

Package: BGA Type

Manufacturer: Rockchip Electronics ( )


RK3026 arm cpu


RK3026 is a low power, high performance processor solution for tablet, and other digital multimedia applications, and integrates Dual-core Cortex-A9 with separately Neon and FPU coprocessor ,and also with 256KB L2 Cache. Many embedded powerful hardware engines provide optimized performance for high-end application. RK3026 supports almost full-format video decoder by 1080p@60fps, also support H.264/MVC/VP8 encoder by 1080p@30fps, high-quality JPEG encoder/decoder and special image preprocessor and postprocessor .


Block diagram

RK3026 datasheet block diagram


1. Dual-core ARM Cortex-A9 processor is a high-performance, low-power, cached application processor

2. Full implementation of the ARM architecture v7-A instruction set, ARM Neon Advanced
SIMD (single instruction, multiple data) support for accelerated media and signal
processing computation

3. Superscalar, variable length, out-of-order pipeline with dynamic branch prediction,
8-stage pipeline

4. Include VFPv3 hardware to support single and double-precision add, subtract, divide,
multiply and accumulate, and square root operations

Official Homepage:


RK3026 Datasheet


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