M6636B Datasheet | OKI Electric

E2E1035-27-Y2 .. ¡ Semiconductor ¡ Semiconductor MSM6636B This version:MSM6636B Jan. 1998 Previous version: Nov. 1996 SAE-J1850 Multiplex munication Protocol Conformity Transmission Controller for Automotive LAN GENERAL DESCRIPTION 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 burden on the host CPU. 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 node (with CRC code) e Single-byte response from multiple nodes (ID response as ACK) - Error detection by cyclic redundancy check (CRC) - Various munication error detections - Dual-wire bus abnormality detection by internal bus receiver and fault tolerance function - Host CPU interface is accessed in parallel - Sleep function Low current consumption mode by oscillation stop (IDS Max < 50µ A) SLEEP / WAKE UP control from host CPU, WAKE UP via LAN bus - Package: 24-pin plastic SOP (SOP24-P-430-1.27-K) (Product name : MSM6636BGS-K) 1/13 .. ¡ Semiconductor MSM6636B BLOCK DIAGRAM LAN Bus...