Continental BCMS400 Radio Frequency Receiver User Manual

Continental BCMS400 Radio Frequency Receiver

Product Specifications

• Product: Radio Frequency Receiver
• Project Name: BCM Sweet 400
• Model: BCMS400

FAQ

• Q: What are the key features of the Radio Frequency Receiver BCMS400?
  • A: The key features include high sensitivity RF reception, multiple variant options, and optimized antenna parameters.

Product Information

Internal

VERSIONS LIST

RELATED DOCUMENTS

ABBREVIATION REGISTER

Scope of Document

• The aim of this document is to describe BCM S400/S410 product and system for homologation purposes.
• BCM S410 is using same layout and same receiver than BCM S400. The only difference is Micro memory which is 4MB for BCM S400 and 8MB for BCM S410.
• For simplification purposes, BCMS400 will be used for both BCM S400 and S410 products in this document.

General Product Information

Design Location

• Continental Automotive France SAS
  • 1 Avenue Paul OURLIAC 31036 Toulouse, France

Manufacturing Locations

• Continental Automotive France SAS
  • 1 Avenue Paul OURLIAC 31036 Toulouse, France
• Continental Automotive Changchun
  • 1981 Wuhan Road, 130033 Changchun, P.R.China

Short Description of the complete system including BCM S400

BCM S400 01 and BCM S400 02 is Body Control Module including a radio frequency receiver used in vehicle for access (RKE) and TPMS functions. BCM S400 also interfaces with Immobilizer coil and Hand Free Module (HFM). The BCM S400 communicates on CAN and LIN vehicle communication buses.

The vehicle access and TPMS system includes:

• Key fob (ID device), which is not part of the Homologation
• Tire Pressure Monitoring Sensor (TPMS), which is not part of the Homologation
• Immobilizer coil which is not part of the Homologation
• Hand Free Module which is not part of this Homologation
• Body Control Module (BCM)
  • It includes an integrated RF receiver for 433.92 MHz or 315 MHz frequencies. The receiver is designed in direct placement and the BCM integrates a RF printed antenna.

System overview

Functions Variants

TPMS (Tire Pressure Monitoring System)

System explanation

• To control the wheels pressure of vehicle, the Tire pressure sensor (certificate done) transmit information to the BCM by RF. The BCM decodes the signal (with RF Receiver) and transmit data on SPI bus.

Protocol

Block Diagram

RKE (Remote Keyless Entry System)

System Explanation

• To remotely lock and unlock the vehicle, the RKE function is implemented in the system. The Key Fob transmits to the receiver an order. That it transmits on the CAN bus and allows to achieve function.

Protocol

Block Diagram

Technical Description

BCM S400 Block Diagram

RF Receiver definition and overview

• The BCM S400 RF Receiver is based on the NCK2910 integrated circuit (IC) Receiver (from NXP):

The IC NCK2910 is a fully integrated single-chip receiver based on a low IF Weaver architecture.

The device incorporates several commonly used building blocks including a crystal stabilized oscillator, a fractional-N based Phase Locked Loop (PLL) for accurate frequency selection, Low Noise Amplifier (LNA), attenuator for Automatic Gain Control (AGC), I/Q down-mixer and two high resolution Analog to Digital Converters (ADC).The conversion into the digital domain is done in an early phase, enabling a software defined radio like approach. To achieve a low average system current consumption, the device offers a fully autonomous RF polling. When an  incoming signal fulfils the selected criteria, the host processor is alerted by an interrupt and data  payload is available from the internal memory. Then the data can be read by SPI communication bus.

Following are the RF receiver parameters of the BCM S400 01 and BCM S400 02:

• The RF receiver module is designed to handle the following features:
  Functions| RKE / TPMS
  ---|---
  Market| US / EUR / KOR| JPN
  Frequency| 433.92 MHz| 315 MHz
  Coding| Manchester
  Data Rate| 9,6Kbps
  Modulation| FSK [+/- 40 kHz deviation]
  Conducted Rx sensitivity

MER 10%

| Min.: -103 dBm

Typ.: -106 dBm

• The receiver is configured for supporting RF data rate of 9.6 Kbit/s.
• The receiver is configured for supporting Manchester data coding.
• The receiver is configured in self-polling mode whatever the system state (Low power, high power, IGN ON/OFF, engine ON/OFF) except during RKE/TPMS frames treatment (receiver ON for RF reception window) and during driving for TPMS (receiver is ON).
• The receiver is configured to comply with the RKE protocol particularly, to handle a RKE Wake Up Pattern of minimum 400 bits.
• The receiver is also configured to comply with the TPMS protocol defined in the system specification.
• The RF receiver is in self polling mode (with double polling period than normal mode) during the delivery mode.
• The RF antenna is integrated in the BCM S400 and it is a PCB printed antenna.

RF Rx Antenna parameters

• Antenna Model: BCM S400 01_433M92
• Rated operating frequency: 433.92 MHz
• Operating Temperature range: – 40°C to 85°C
• Antenna type: Printed circuit board antenna trace structure
  • (electrical field antenna)
• Antenna Brand: Continental
• Antenna gain: max.: – 1 dBi
• Antenna Model: BCM S400 02_315M
• Rated operating frequency: 315 MHz
• Operating Temperature range: – 40°C to 85°C
• Antenna type: Printed circuit board antenna trace structure
  • (electrical field antenna)
• Antenna Brand: Continental
• Antenna gain: max.: – 3 dBi

Pictures of the product

Exploded view

PCB overview

Product Variants

Product Variants (To be updated)

Product version| CONTINENTAL

part number

---|---
 |

Homologation reference Model numbers

FCC STATEMENT

NOTICE for FCC certification:

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference.
2. This device must accept any interference received, including interference that may cause undesired operation.

Changes or modifications made to this equipment not expressly approved by Continental Automotive Technologies GmbH may void the FCC authorization to operate this equipment.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Proprietary data, company confidential. All r ights reserved.

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