M6636B Overview
The MSM6636B is a transmission controller for automotive LAN based on data munication protocol SAE-J1850. This device can realize a data bus topology bus LAN system with a PWM bit encoding method (41.6 kbps). In addition to a protocol control circuit, MSM6636B has an enclosed quartz oscillation circuit, host CPU interface (parallel interface), a transmit/receive buffer, and a bus receiver circuit that decreases the...
M6636B Key Features
- Based on SAE-J1850 CLASS B DATA MUNICATION NETWORK INTERFACE (issued August 12, 1991)
- Non-destructive collision and priority control using CSMA/CD
- Internal transmit buffer (1 frame) and receive buffer (2 frames)
- Modulating/demodulating: PWM (Pulse Width Modulation)
- Transmission speed: 41.6 kbps
- 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
- Three types of in-frame response support: q Single-byte response from a single node w Multi-byte response from a single
- Error detection by cyclic redundancy check (CRC)