Transmission control circuit

Abstract

Abstract PURPOSE:To form easily the transmission control part of a system without producing a transmission control program by providing a ROM part into a transmission control circuit and performing previously the input of a synchronizing system and the transmission control procedure (information transition table) as the ROM data when the system is formed. CONSTITUTION:A MODEM interface 11 performs an interface matching operation of the input signals and at the same time receives data after performing the selection of the start-stop synchronization, SYN synchronization and HLDC (F synchronization), the selection of data polarity, the selection of bit order, the selection of the error control system, etc. based on the data stored in a ROM part ROM 102 within a transmission control part LCONT 10. Furthermore, the reception data are divided for each frame and stored temporarily in a circuit side buffer LBUF 111 at a frame recognizing part FREC 112 in the part 11 based on the data stored in the ROM 102.

Inventors

• 👤 Yuichi Hirao
• 👤 友一 平尾
• 👤 Seiichi Inoue
• 👤 誠一 井上

Bibliographic Details