IG810 Video Encoder board
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
The Air Side Video Encoder board does real-time digital video stream compression for radio transfer. That stream can then be decoded and viewed on Ground Side.
Several versions of the board are known. Additinally, the board is very similar to IG800 Video Encoder board.
| Marking | Overview |
|---|---|
| P00924.04 | |
| P00924.05 |
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| TI DaVinci DM365AAAROI 48PDCN0 61 644A AAR | 1 | Media Processor | ||
| 5DK77 D9PSK P6L7 | 2 | Micron 2Gbit DDR3 SDRAM | description | |
| 2JE12 NW362 6TTH | 1 | Micron MT29F?G? NAND | ||
| ADV7650 66CZ-P #1507 3032805.1 CHINA | 1 | Analog Devices HDMI decoder chip | ||
| 51511 TI 5316? AJNT | 1 | QFN-8888 | Texas Instruments TVP5151 Ultralow-Power NTSC/PAL/SECAM Video Decoder; 9-Bit Analog-to-Digital Converter | description |
| PA 5TD/6LB | 2 | 3x3 UDFN/WSON | Mini Linear Regultor; part used is DI AP7361ADJ, but it could also be TI TPS7A16 | DI datasheet TI description |
| C ?? ?? | 1 | Atmel AT88/ATSHA204 | ||
| A??? | 6 | 8-pin SOT23 | Buck converter |
| Chips | Firmware | Description |
|---|---|---|
| DM3xx, IS43DR?, MX30LF1G/MT29F1G? | m0800 | Live feed video encoding. |
| Marking | Overview |
|---|---|
| TODO |
The following service pads exist on this board:
| Marking | Overview |
|---|---|
| TODO |
Top of a P00924.04 board:
Bottom of the P00924.04 board:
Top of a P00924.05 board:
Bottom of the P00924.05 board:
flowchart LR
DBus-cable((DBus/FC<br/>cable))
Gimbal-cable((Gimbal<br/>cable))
HDMI-cable((HDMI<br/>cable))
AV-cable((AV<br/>cable))
HDMI-cable===HDMI-Decoder
Gimbal-cable-- DUML over CAN,<br/>L/H lines ---CAN-passthrough
DBus-cable----DBus-passthrough
AV-cable== analog<br/>A/V ===AV-Decoder
Gimbal-cable== video stream<br/>over USB,<br/>G-/G+ lines ====DaVinci-SoC
subgraph Video Encoder board
HDMI-Decoder[HDMI<br/>video<br/>decoder]
AV-Decoder[video<br/>analog<br/>to digital<br/>converter]
Gimbal-CryptoAuth[ATSHA204<br/>Crypto<br/>Auth]
DaVinci-SoC[DM365 SoC<br/>video feed<br/>encoder]
DaVinci-SoC---DaVinci-Xlat(quartz<br/>oscillator)
DaVinci-SoC---DaVinci-RAM[DDR3<br/>SDRAM<br/>512MB]
DaVinci-SoC---DaVinci-FLASH[NAND<br/>Flash]
HDMI-Decoder===DaVinci-SoC
HDMI-Decoder---HDMI-Xlat(quartz<br/>oscillator)
AV-Decoder===DaVinci-SoC
AV-Decoder---AV-Xlat(quartz<br/>oscillator)
Gimbal-CryptoAuth---DaVinci-SoC
CAN-passthrough(( ))
DBus-passthrough(( ))
end
Interboard-OFDM((inter-<br/>board conn<br/>to OFDM))
DaVinci-SoC== encoded<br/>video stream<br/>over USB ====Interboard-OFDM
CAN-passthrough-- DUML over CAN ----Interboard-OFDM
DBus-passthrough----Interboard-OFDM
Thick lines present propagation of video data. The live video feed can be acquired from HDMI, analog A/V, or wrapped with USB packets from gimbal cable. The DM365 receives the video and converts into compressed stream with bitrate suitable for radio transmission. Video is wrapped with USB packets again, and sent to Air OFDM Transceiver board.
Telemetry and C&C packets in DUML format are exchanged with the Gimbal. The control also goes to FC, in form of D-Bus serial communication (which is DJI-rebranded S-Bus).
DUML packets from gimbal are provided to the Air OFDM Transceiver board over CAN.
No schematics available.