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CD2481 Folha de dados(PDF) 9 Page - Intel Corporation |
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CD2481 Folha de dados(HTML) 9 Page - Intel Corporation |
9 / 222 page Programmable Four-Channel Communications Controller — CD2481 Datasheet 9 1.0 Features • Four full-duplex multi-protocol channels, each running up to 230.4 kbps (with 60-MHz clock) • Microcode downloadable to on-chip storage supports various asynchronous and synchronous protocols on all channels • 32-bit address, 16-bit data, double-buffered DMA (direct memory access) controller for each transmitter and receiver; two independent bit-rate generators per channel for transmit and receive • On-chip NRZ (nonreturn-to-zero), NRZI (nonreturn-to-zero inverted), and Manchester data encoding and decoding • DPLL (digital phase locked loop) on each receiver • Two independent timers per channel Protocols Supported PPP (Point-to-Point Protocol) Features • Supports data link level — RFC-1661 • Supports dual async control character maps (32 control characters) — RFC-1662 • Compatible with ISO 3309/4335 Addendum 1 • Automatic insertion/deletion of control/escape characters and bit complements • Automatic generation and detection of 16-bit FCS (frame check sequence) HDLC/SDLC (Non-Multidrop) Features • Four 8-bit or two 16-bit frame address matching • FCS generation and validation • Programmable leading-pad character transmission • Supports shared flags on receive frames • Programmable number of leading flags Asynchronous Features • User-programmable and automatic flow control modes — In-band (software) by XON/XOFF — Out-of-band (hardware flow control) by RTS/CTS and DTR/DSR • Line-break detection and generation • Special-character and character-range recognition and transmission • Transmit delay • 5- to 8-bit character plus optional parity |
Nº de peça semelhante - CD2481 |
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Descrição semelhante - CD2481 |
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