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TL16C2552FN
1.8-V to 5-V Dual UART with 16-Byte FIFOs
www.ti.com
FEATURES
APPLICATIONS
DESCRIPTION
TL16C2552
SLWS163A–SEPTEMBER 2005–REVISED JUNE 2006
1.8-V to 5-V DUAL UART WITH 16-BYTE FIFOS False-Start Bit Detection Programmable Auto-RTS and Auto-CTS •
Complete Status Reporting Capabilities In Auto-CTS Mode, CTS Controls the •
3-State Output TTL Drive Capabilities for
Transmitter Bidirectional Data Bus and Control Bus In Auto-RTS Mode, RCV FIFO Contents, and •
Line Break Generation and Detection
Threshold Control RTS •
Internal Diagnostic Capabilities: Serial and Modem Control Outputs Drivea – Loopback Controls for CommunicationsRJ11 Cable Directly When Equipmentis on Link Fault Isolationthe Same Power Drop – Break, Parity, Overrun, and Framing Error•
Capableof Running With All Existing Simulation
TL16C450 Software •
Fully Prioritized Interrupt System Controls•
After Reset, All Registers Are Identicalto the •
Modem Control Functions (CTS, RTS, DSR,TL16C450 Register Set DTR, RI, and DCD)•
Upto 24-MHz Clock Rate for upto 1.5-Mbaud •
Availablein 44-Pin PLCC (FN)or 32-Pin QFNOperation WithVCC=5V (RHB) Packages•
Upto 20-MHz Clock Rate for upto •
Each UART's Internal Register Set May Be1.25-Mbaud Operation With VCC= 3.3V Written Concurrentlyto Save Setup Time•
Upto 16-MHz Clock Rate for upto 1-Mbaud •
Multi-Function Output (MF) Allows UserstoOperation WithVCC= 2.5V Select Among Several Functions, Saving•
Upto 10-MHz Clock Rate for upto 625-kbaud Package Pins
Operation With VCC= 1.8V In the TL16C450 Mode, Hold and Shift
Registers Eliminate the Need for Precise •
Point-of-Sale Terminals
Synchronization Between the CPU and Serial •
Gaming TerminalsData •
Portable Applications•
Programmable Baud Rate Generator Allows •
Router ControlDivisionof Any Input Reference Clock by1to •
Cellular Data(216-1) and Generatesan Internal16× Clock •
Factory Automation•
Standard Asynchronous Communication Bits
(Start, Stop, and Parity) Addedtoor Deleted
From the Serial Data Stream The TL16C2552isa dual universal asynchronous•
5-V, 3.3-V, 2.5-V, and 1.8V Operation receiver and transmitter (UART).It incorporates the•
Independent Receiver Clock Input functionalityof two TL16C550D UARTs, each UART
having its own register set and FIFOs. The two•
Transmit, Receive, Line Status, and Data Set UARTs share only the data bus interface and clock
Interrupts Independently Controlled source, otherwise they operate independently.•
Programmable Serial Interface Another name for the UART function is
Characteristics: Asynchronous Communications Element (ACE), and
7-, these terms will be used interchangeably. The bulk
Baud Generation
