WM321 Camera encoder board - randomlettersandnumbers/DJI-Stuff GitHub Wiki
Table of Contents
Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics
Function
The Camera encoder board in P3C is connected to sensor board. It contains a video encoder chipset which processes two video streams: one allows writing the video and photos to a SD card, and second is sent to gimbal top board for wireless FPV transmission.
Variants
The known variants are listed below.
| Marking | Overview |
|---|---|
| P01246.01 | First version. |
| P01426.03 | Minor changes only. |
Parts
| Marking | Amt. | Pkg. | Function | Specification |
|---|---|---|---|---|
| Ambarella A9-A1-RH A1502 X1502-AN1 1R1 A9S15 | 1 | BGA | Ultra HD 4K Camera SoC | datasheet |
| Elpida B8132B3PB-1D-F 1508RR41100 | 1 | 168-ball 12×12 FBGA | Embedded LPDDR2 SDRAM for Ambarella | description |
| MXIC B171009 MX30LF2G18AC-XKI 8D366002 | 1 | 63-ball 11x9 VFBGA | 3V SLC NAND Flash memory | description |
| 5GE12 NQ283 | 1 | 63-ball 11x9 VFBGA | Micron MT29F2G08ABAEAH4 NAND Flash; MX30LF replacement on some boards | description |
| VUBI T1 54 S23F | 2 | 16-lead 3x3 QFN | TLV62130RGT - 3-17V 3A Step-Down Converter | description |
| 51AJ29U 26480CF | 1 | 24-lead 4x4 WQFN | TI LM26480QSQX-CF Dual High-Current Step-Down DC/DC and Dual Linear Regulators | description |
| 24.000 55 8Y 8B | 1 | 4-lead SMD 3225 | Quartz oscillator, 24 MHz | |
| C 5A AW | 1 | 8-lead | Atmel ATSHA204 CryptoAuthentication? | |
| F21A | 1 | 6-pin | TI LM3880MF-1AB Three-Rail Simple Power Sequencer | datasheet |
| C3JEC | 1 | 4-lead 7x1.5 SMD | plastic covered metal case with quartz oscillator; Seiko Epson MC-146 series or its knock-off, exact model unknown | description |
| BNA | 1 | 5-pin SOT-23 | ||
| CER | 1 | 5-lead 2x1.5 UQFN |
Programming
TODO
External interfaces
The board contains one connector:
| Marking | Overview |
|---|---|
| TODO |
Service interfaces
The following service pads exist on this board:
| Marking | Overview |
|---|---|
| U0RX | |
| U0TX | |
| 5V | |
| GND | |
| A9S_3V3 | |
| 1.25V | |
| VBUS | |
| 3V3 | |
| DM | |
| DP | |
| VDD | |
| RST | |
| TDI | |
| TMS | |
| TDO | |
| CLK | |
| GND | |
| 1V8 | |
| GND | |
| U3_RX | |
| U3_TX | |
| ISP | |
| GND | |
| O6 | |
| U2TX | |
| U2RX | |
| RSTEX |
Board view
Top of a P01246.01 board:
Bottom of the P01246.01 board:
Top of a P01246.03 board:
Bottom of the P01246.03 board:
Schematics
No schematics available.