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TL16C750FNR 数据表(PDF) 1 Page - Texas Instruments |
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TL16C750FNR 数据表(HTML) 1 Page - Texas Instruments |
1 / 35 page TL16C750 ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH 64-BYTE FIFOs AND AUTOFLOW CONTROL SLLS191C – JANUARY 1995 – REVISED DECEMBER 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Pin-to-Pin Compatible With the Existing TL16C550B/C D Programmable 16- or 64-Byte FIFOs to Reduce CPU Interrupts D Programmable Auto-RTS and Auto-CTS D In Auto-CTS Mode, CTS Controls Transmitter D In Auto-RTS Mode, Receiver FIFO Contents and Threshold Control RTS D Serial and Modem Control Outputs Drive a RJ11 Cable Directly When Equipment Is on the Same Power Drop D Capable of Running With All Existing TL16C450 Software D After Reset, All Registers Are Identical to the TL16C450 Register Set D Up to 16-MHz Clock Rate for Up to 1-Mbaud Operation D In the TL16C450 Mode, Hold and Shift Registers Eliminate the Need for Precise Synchronization Between the CPU and Serial Data D Programmable Baud Rate Generator Allows Division of Any Input Reference Clock by 1 to (216 – 1) and Generates an Internal 16 × Clock D Standard Asynchronous Communication Bits (Start, Stop, and Parity) Added or Deleted to or From the Serial Data Stream D 5-V and 3-V Operation D Register Selectable Sleep Mode and Low-Power Mode D Independent Receiver Clock Input D Independently Controlled Transmit, Receive, Line Status, and Data Set Interrupts D Fully Programmable Serial Interface Characteristics: – 5-, 6-, 7-, or 8-Bit Characters – Even-, Odd-, or No-Parity Bit Generation and Detection – 1-, 1 1/2-, or 2-Stop Bit Generation – Baud Generation (DC to 1 Mbits Per Second) D False Start Bit Detection D Complete Status Reporting Capabilities D 3-State Output CMOS Drive Capabilities for Bidirectional Data Bus and Control Bus D Line Break Generation and Detection D Internal Diagnostic Capabilities: – Loopback Controls for Communications Link Fault Isolation – Break, Parity, Overrun, Framing Error Simulation D Fully Prioritized Interrupt System Controls D Modem Control Functions (CTS, RTS, DSR, DTR, RI, and DCD) D Available in 44-Pin PLCC and 64-Pin SQFP D Industrial Temperature Range Available for 64-Pin SQFP description The TL16C750 is a functional upgrade of the TL16C550C asynchronous communications element (ACE), which in turn is a functional upgrade of the TL16C450. Functionally equivalent to the TL16C450 on power up (character or TL16C450 mode), the TL16C750, like the TL16C550C, can be placed in an alternate mode (FIFO mode). This relieves the CPU of excessive software overhead by buffering received and transmitted characters. The receiver and transmitter FIFOs store up to 64 bytes including three additional bits of error status per byte for the receiver FIFO. The user can choose between a 16-byte FIFO mode or an extended 64-byte FIFO mode. In the FIFO mode, there is a selectable autoflow control feature that can significantly reduce software overload and increase system efficiency by automatically controlling serial data flow through the RTS output and the CTS input signals (see Figure 1). The TL16C750 performs serial-to-parallel conversion on data received from a peripheral device or modem and parallel-to-serial conversion on data received from its CPU. The CPU can read the ACE status at any time. The ACE includes complete modem control capability and a processor interrupt system that can be tailored to minimize software management of the communications link. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1997, Texas Instruments Incorporated |
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类似说明 - TL16C750FNR |
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