MSM6636 Overview
The MSM6636 is a transmission controller for automotive LAN based on data munication protocol SAE-J1850. This LSI can realize a data bus topology bus LAN system with a PWM bit encoding method (41.6 K bps). In addition to a protocol control circuit, MSM6636 has an enclosed quartz oscillation circuit, host CPU interface (clock synchronous serial / UART), a transmit/ receive buffer, and a bus receiver circuit that...
MSM6636 Key Features
- Based on SAE-J1850 CLASS B DATA MUNICATION NETWORK INTERFACE (issued August 12, 1991)
- CSMA/CD (Carrier-sense multiple access with collision detection)
- Internal transmit buffer (1 frame) and receive buffer (2 frames)
- Bit encoding: PWM (Pulse Width Modulation)
- Transmission Speed: 41.6K bps
- Multi-address setting with physical addressing: 1 type / functional addressing: 15 types
- Address filter function by multi-addressing (broadcasting possible)
- Automatic retransmission function by arbitration loss and non ACK
- 3 types of in-frame response support: q Single-byte response from a single recipient w Multi-byte response from a single
- Error detection by cyclic redundancy check (CRC)