分集兩個 RF 解調器調諧器 MPEG-TS 輸出雙天線 DiBcom 晶片 DVB-T COFDM 接收器 RX 模組

特徵

• Dual antenna reception, SMA antenna interface
• Receiving frequency band: 160兆赫~860兆赫
• Single channel receiving sensitivity: -97±1dbm at QPSK 8MHz, -98±1dbm at QPSK 6MHz, the sensitivity increases by 3dbm when receiving with dual antennas
• 支援高速移動接收
• 支援的參數:
  • 快速傅立葉變換：2K，8K
  • 保護間隔: 1/4, 1/8, 1/16, 1/32
  • FEC：1/2, 2/3, 3/4, 5/6, 7/8
  • 調製映射: QPSK, QAM16, QAM64
  • 帶寬: 1.8MHz~8MHz, step 0.1MHz
• The demodulated digital signal output interface is J3 interface (TSI)
• 電源指示燈, work indicator light
• PCBA weight: 13.4 克
• 板尺寸: 51mm x 30mm

注意

This demodulation module is pure hardware and does not contain an MCU, so it cannot run independently. It can be used as a plug-in module to output TS streams. You need to design it yourself or use our baseboard to work.

This is a dual antenna receiver that outputs TS stream (physical interface). There is no MCU on the module and it cannot be used alone. Customers buy this module and integrate it into their own products, and they also need to transplant the driver into their own products.

This module itself does not have code and cannot be used alone. An external chip is required to load the firmware into it (similar to the early WiFi modules)

J3 Pin interface defines

The J3 interface is a 2×10 20pin 1.27mm pitch straight pin header, which is used to connect our module and the decoder board. It uses TSI to transmit data. Its signal definition is shown in the table below:

PIN serial number	方向	signal name	描述
1	IN/OUT	HOST_BUS0	DR2C I2C Data
2	IN/OUT	HOST_BUS1	DR2C I2C Clock
3	在	RESET_IN	DR2C Reset
4	壓水堆	接地	signal place
5	壓水堆	VDD_5V	DR2C 5V power input
6	出去	HOST_BUS2	TSI Data0
7	出去	HOST_BUS3	TSI Data1
8	出去	HOST_BUS4	TSI Data2
9	出去	HOST_BUS5	TSI Data3
10	出去	HOST_BUS6	TSI Data4
11	出去	HOST_BUS7	TSI Data5
12	出去	HOST_BUS8	TSI Data6
13	出去	HOST_BUS9	TSI Data 7
14	出去	HOST_BUS10	TSI Frame Indicator
15	出去	HOST_BUS11	TSI Sync
16	出去	INT_SELECT1	DR2C mode Select
17	出去	HOST_BUS12	TSI Clock
18	在	HOST_BUS13	FEC Fail
19	壓水堆	VDD_3P3V	DR2C 3.3V power input
20	壓水堆	接地	signal place

Module Mechanical Dimensions

Demodulator + Decoder board

常問問題:

Q1: Is the TS output of your demodulation chip serial or parallel?

A1: Parallel.

Q2: Does your module support TS output?

A2: 是. This module J3 contains an output physical interface.

If you need to match it with our decoding baseboard, it not only has HDMI and CVBS output, but also contains an Ethernet port. This Ethernet port supports the output of TS video streams, which can be played on Windows or Linux through VLC player.

Q3: Can I buy a sample of this diversity RF DVB-T demodulator with TS output interface module?

A3: We are happy to provide you with samples. We have to remind you that this is a pure hardware product. In addition to two RF inputs and a J3 interface, there is no separate power supply and video output port, and there is no MCU and firmware on this module, so it cannot be run and tested alone.

If you need to test, please purchase it together with its baseboard (電源, decoding chip and HDMI/CVBS/Ethernet output). See the picture above. When you understand its performance, you can develop your hardware or peripheral circuits, or we are also happy to provide technical support.

第四季: Can you provide me with the source code and driver? I need to program it.

A4: We need to consider your project requirements and purchase volume before we can provide code and source programs. We are happy to cooperate with you.

Q5: Can the DiBcom handle higher-frequency inputs? The 2.0-2.9 GHz frequency band is available to me.

一個: DiBcom 9090MA only supports 170-860Mhz. Please use frequency down conversion to support 2~2.9Ghz.

More About this product

The DiBcom 9090MA is a chipset designed for DVB-T (數位視訊廣播 – 陸地的) 接待. It is commonly used in USB TV tuners, automotive applications, and embedded systems. Here’s a detailed overview of its features and setup, particularly for handling TS (傳輸串流) 輸出.

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DiBcom 9090MA Overview

1. Core Features:

   • DVB-T Support: Compliant with the DVB-T standard.
   • 高靈敏度: Optimized for reliable reception, 即使在充滿挑戰的環境中.
   • 多元化接待: Supports antenna diversity for better signal quality.
   • 傳輸串流 (TS) 輸出:
     • Delivers MPEG-2 TS over a variety of interfaces.

2. 介面:

   • I2C Interface: For control and configuration.
   • TS Output:
     • Parallel TS or serial TS modes, selectable based on the application.
     • Outputs MPEG-2 TS for decoding or further processing.

3. 應用:

   • Wireless COFDM Video receiver
   • USB DVB-T tuners for PCs and embedded systems.
   • Automotive DVB-T receivers.
   • Digital TV integration in portable devices.

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傳輸串流 (TS) 輸出

The DiBcom 9090MA outputs MPEG-2 Transport Streams, which is the standard for digital TV broadcasting. 這是它的工作原理:

1. TS Data Format:TS

   • Comprises packets of 188 位元組.
   • Contains video, 聲音的, and metadata multiplexed into a single stream.

2. TS Output Modes:

   • Parallel TS:
     • Outputs 8 bits of data per clock cycle.
     • Requires more pins but provides faster data transfer.
   • Serial TS:
     • Outputs 1 bit per clock cycle.
     • Uses fewer pins but may be slower.

3. Clock Signal:

   • The chipset provides a clock signal to synchronize the TS data output.

4. Control Signals:

   • Data Valid (DVALID): Indicates valid data on the TS bus.
   • Sync: Signals the start of a TS packet.

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DiBcom and TS output Integration Steps

1. 硬體連接:

   • Connect the TS output pins (parallel or serial) to a demultiplexer or decoder.
   • Use an I2C interface to configure the tuner.

2. Configuration via I2C:

   • The 9090MA needs to be configured through I2C commands for:9090MA
     • Channel frequency.
     • 帶寬 (6, 7, 或者 8 兆赫).
     • TS output mode (parallel or serial).

3. TS Decoding:

   • Feed the TS output to a compatible decoder, such as an MPEG-2 decoder or software-based solution.

4. Software Integration:

   • Use Linux DVB APIs (if applicable) for capturing and processing TS data.
   • Applications like VLC Media Player or custom software can decode and display the TS.

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使用案例

1. USB DVB-T Tuners:USB DVB-T：
   • Combine with a USB interface IC (例如, Cypress EZ-USB) for PC-based TV tuners.
2. Automotive Receivers:
   • Use diversity reception with two or more 9090MA chips for stable reception in moving vehicles.
3. Embedded Systems:
   • Integrate with ARM-based boards to provide DVB-T functionality in custom devices.

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Example Application Circuit

1. Components:

   • DiBcom 9090MA as the tuner chip.
   • 一個 RF front-end for antenna and signal conditioning.
   • I2C interface connected to a microcontroller or CPU.
   • TS output connected to a decoder or USB bridge.

2. TS Output Example:

   • Parallel Mode:
     • Data lines: TS[7:0].
     • Control lines: CLK, DVALID, and SYNC.
   • Serial Mode:
     • Single data line: TS_DATA.
     • Clock and control lines.