TL16C550B
TL16C550B is ACE manufactured by Texas Instruments.
description
The TL16C550B and the TL16C550BI are functional upgrades of the TL16C450 asynchronous munications element (ACE). Functionally identical to the TL16C450 on power up (character mode†), the TL16C550B and TL16C550BI can be placed in an alternate mode (FIFO) to relieve the CPU of excessive software overhead.
In this alternate FIFO mode, internal FIFOs are activated allowing 16 bytes (plus 3 bits of error data per byte in the receiver FIFO) to be stored in both receive and transmit modes. To minimize system overhead and maximize system efficiency, all logic is on the chip. Two of the TL16C450 terminal functions (RXRDY and TXRDY) have been changed to allow signalling of DMA transfers.
The TL16C550B and the TL16C550BI 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 and report on the status of the ACE at any point in the ACE operation. Reported status information includes: the type of transfer operation in progress, the status of the operation, and any error conditions encountered.
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.
† The TL16C550B and the TL16C550BI can also...
