Drone, Robotics & UAV Safety

Multi-Protocol RC Receiver

rcreceiver is a multi-protocol RC-link decoder for drone / UAV flight control,

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ASIL-B

target

93.75%

SPFM

90.00%

LFM

PASS

FMEDA

2.9K

gates

1.0.0

version

The deliverable

What you’re licensing

rcreceiver is a multi-protocol RC-link decoder for drone / UAV flight control, It is delivered as a licensable soft-IP block engineered as an ASIL-B Safety Element out of Context — not just RTL, but the complete functional-safety work package needed to carry it into an ISO 26262 program:

Synthesizable RTL

Portable, vendor-neutral SystemVerilog that drops onto your existing SoC fabric — no foundry or EDA-tool lock-in.

Per-IP FMEDA report

SPFM / LFM / PMHF computed against the ASIL target per ISO 26262-5 — the quantitative analysis your assessor asks for.

Safety manual

Assumptions of use, the safety mechanisms and their diagnostic coverage — written to drop straight into your safety case.

IP-XACT + integration docs

A machine-readable descriptor plus register and integration documentation for fast, low-risk bring-up.

Self-checking testbench

A self-checking (crypto: bit-exact) testbench and a one-command build, so you can reproduce every claim on day one.

What it is

rc_receiver is a multi-protocol RC-link decoder for drone / UAV flight control, delivered as synthesizable SystemVerilog soft-IP on an APB4-lite slave with built-in ASIL-B safety instrumentation.

Key Features

SBUS / CRSF·ELRS / PPM auto/selectable decode
Per-frame integrity (framing/CRC8/pulse-range) (\rightarrow) err_code 3
Staleness watchdog (\rightarrow) failsafe + err_code 4
Decode-FSM diverse DMR (err_code 9)
Config-register parity (err_code 1)
16 channels + failsafe/fresh strobes

Standards & Compliance

Futaba SBUS, TBS CRSF / ExpressLRS, PPM

Functional Safety

ASIL-B (SEooC) · SPFM 93.75% · LFM 90.00% · PASS

ISO 26262:2018 · FMEDA available · Safety Manual included

Register Map

Offset	Register	Description
`0x00`	CTRL	[0]EN [2:1]PROTO(0=SBUS,1=CRSF,2=PPM) [3]INV(SBUS line invert)
`0x04`	BAUDDIV	[15:0] 16x-oversample divisor = clk/(16*baud)
`0x08`	FRAME_TO[31:0]	staleness watchdog timeout in clk cycles (0 = disabled)
`0x0C`	PPM_CFG	[15:0]=PW_MIN [31:16]=PW_MAX (PPM pulse-width window, clk cycles)
`0x10`	STATUS	RO [0]FAILSAFE [1]FRAME_LOST [2]FRESH [3]ERR_VALID [7:4]ERR_CODE [12:8]CHAN_CNT

…3 more registers — see datasheet for the full table.

Getting Started

// Minimal instantiation
rc_receiver #(
  .ADDR_W(6)
) u_rc_receiver (
  .clk       (clk),
  .rst_n     (rst_n),
  // APB4
  .p_paddr   (paddr),
  .p_psel    (psel),
  .p_penable (penable),
  .p_pwrite  (pwrite),
  .p_pwdata  (pwdata),
  .p_prdata  (prdata),
  .p_pready  (pready),
  // Safety
  .err_clear (1'b0),
  .err_valid (err_valid),
  .err_code  (err_code)
);

Configure via the CTRL register after reset to enable the IP and set operating parameters. Monitor err_valid / err_code for any safety faults reported by the built-in safety monitor.

Applications

Where it fits

Typically deployed in UAV flight controllers and robotics platforms operating under a functional-safety mandate.

The case

Why license it, not build it

Skip 12–18 months

The FMEDA and the safety case are already generated. You integrate a finished safety element — you don’t stand up a safety-IP program to originate one.

One vendor, one safety story

Every block in the catalog shares the same safety architecture, fault-reaction model, and FMEDA methodology — so subsystems roll up cleanly.

Verified, not vapor

The RTL builds and passes today; the safety metrics come from analysis and fault injection against real RTL, not a datasheet promise.

Interested in Multi-Protocol RC Receiver?

Pricing, the per-IP FMEDA, safety manual, and RTL data room are shared under a mutual NDA.

Talk to us →See related IP

Figures are pre-silicon engineering-grade estimates for a Safety Element out of Context (SEooC); final ASIL sign-off is the integrator’s, supported under NDA. FMEDA and Safety Manual available under NDA.

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