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TP703 RF Protocols board

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mefistotelis edited this page Dec 5, 2022 · 2 revisions

Table of Contents

Function
Variants
Parts
Programming
External interfaces
Service interfaces
Board view
Schematics

Function

The RF Protocols board packs together receivers for several radio transmission protocols used by DJI over several generations of drones.

The radio channels contain:

  • Lightbridge (WiMAX-based protocol used in Phantom 3 Pro/Adv and Phantom 4 Std; see m1900)

  • Wi-Fi (Used in some drones with limited range, like Mavic Air and Spark, but also as an option in Mavic Pro; see m0700)

  • Ocusync (LTE-based protocol used in most drones from Mavic series; see m0901)

Each of these radio channels is doubled, for 2.4GHz and for 5.8GHz transmission frequency band. Then all the RF channels are doubled again, so that there are two of each kind. This divides the board into 12 distinct sectors, each containing one of the RF channels.

Variants

One version of the board is known.

Marking Overview
P03024.05 First known version.

Parts

List of known components existing in each sector of the board is presented in the tables below.

Parts in SDR sectors

Marking Amt. Pkg. Function Specification
IE1000 N4FW30.00 2115 4 5.8GHz RF Amp (both PA and LNA)
ACP ACPD4GD31D3 EDNV882KC 2 169-ball FBGA ACP IRIS411 LTE Cat 4 Transceiver, with I/Q samples and control messages exchanged on a DigRF v4 serial interface; acts as RF front-end for LC1860C description
Leadcore LC1860C T2F20221 823 TBTT74.00 ARM 2 579-ball 13x13mm BGA Quad-core 1.5GHz ARM Cortex-A7 SoC with Mali-T622 GPU and LTE Cat 4 baseband modem
Leadcore LC1160 S2F2 0921 3242 HHF367 2 Power Management Unit and Audio codec, which meets LC1860 requirements
Kingston 2400640-002 A00G-A 2049 2011U3723.08 04EMCPQ4-NL3DM627 2

Parts in WIFI sectors

Marking Amt. Pkg. Function Specification
Atheros AR9342-DL3A FK040PZH 2040 TAIWAN 2 AR9003 family, Highly-Integrated and Feature-Rich IEEE 802.11n 2x2 2.4/5 GHz Premium SoC for Advanced WLAN Platforms similar datasheet
Winbond W9751G6KB-25 69189C700002 930PUA TWN 1
CY7C656 42 1931 SNT4951 2 28-lead QFN
PA O,A 2
IAEUM 4 Step-Down Converter?
AON 7409 D1 QR1C 2 definitely AON logo, but marking uncertain
10011B TI 718 A0YZ 2
TW 044 HGV 2 marking uncertain

Parts in LB sectors

Marking Amt. Pkg. Function Specification
NXP LPC1549JBD100 STB071.1 09 ZSD21022A 1 Motion Control 32-bit Microcontroller based on ARM Cortex-M3 description
Artosyn AR8001 DKM973 E2042 1 Lightbridge Data encoder; contains custom digital circuit which replaced FPGA used in earlier Lightbridge implementations. The chip behaves in the same way as FPGA with m1900 did.
AD80403BBCZ #1949 4769749.1 Singapore 1 144-ball 10x10 CSP-BGA 2x2 RF agile transceiver, Band: 2.4GHz to 2.5GHz and 4.9GHz to 6GHz; tunable channel bandwidth: <200kHz to 40MHz; Lightbridge RF amplifier brief

Programming

Chips Firmware Description
LC1860C ? .
AR9342 ? .
LPC1549 ? .

External interfaces

Connectors on the board are:

Marking Overview
TODO

Service interfaces

The following service pads exist on this board:

Marking Overview
TODO

Board view

Top of a P03024.05 board:

TP703 RF Protocols board v5 A top

Bottom of the P03024.05 board:

TP703 RF Protocols board v5 A bottom

Schematics

No schematics available.

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