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TL16C550DPFB bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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TL16C550DPFB bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 50 page TL16C550D, TL16C550DI ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH AUTOFLOW CONTROL SLLS597C − APRIL 2004 − REVISED JUNE 2005 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Programmable Auto-RTS and Auto-CTS D In Auto-CTS Mode, CTS Controls Transmitter D In Auto-RTS Mode, RCV 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 24-MHz Clock Rate for up to 1.5-Mbaud Operation With VCC = 5 V D Up to 20-MHz Clock Rate for up to 1.25-Mbaud Operation With VCC = 3.3 V D Up to 16-MHz Clock Rate for up to 1-Mbaud Operation With VCC = 2.5 V 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 to or Deleted From the Serial Data Stream D 5-V, 3.3-V, and 2.5-V Operation D Independent Receiver Clock Input D Transmit, Receive, Line Status, and Data Set Interrupts Independently Controlled 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 Mbit/s) D False-Start Bit Detection D Complete Status Reporting Capabilities D 3-State Output TTL 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, and Framing Error Simulation D Fully Prioritized Interrupt System Controls D Modem Control Functions (CTS, RTS, DSR, DTR, RI, and DCD) D Available in 48-Pin PT, 48-Pin PFB, and 32-Pin RHB Packages description The TL16C550D and the TL16C550DI are speed and operating voltage upgrades (but functional equivalents) 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 TL16C550D and the TL16C550DI, like the TL16C550C, can be placed in an alternate FIFO mode. This relieves the CPU of excessive software overhead by buffering received and transmitted characters. The receiver and transmitter FIFOs store up to 16 bytes including three additional bits of error status per byte for the receiver FIFO. 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 using RTS output and CTS input signals. The TL16C550D and TL16C550DI perform serial-to-parallel conversions 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 2004 − 2005, Texas Instruments Incorporated |
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