SB16C1058 is an Octal-UART (Universal Asynchronous Receiver and Transmitter) semiconductor, which has 256-Byte FIFO and eight UART Channels supporting automated bus input/output signal control. It operates on SystemBase MIO Bus compatible MIO mode and can be expandable up to 32 ports. Thanks to these new features, MOQ can be lowered than more than 25% and overrun error has been eliminated using large FIFO which improves overall performance.

Advanced Features

It provides efficient performance using 256 Bytes FIFO and option register when developing an application to managing multiple serial ports. SB16C1058 has short access time that can provide more resource time for the CPU.

Best Expandability, Expandable up to 32 ports without any glue logics

256-byte FIFO

SB16C1054 has 256-byte TX/RX FIFOs to reduce CPU overhead for I/O. This large-FIFO will make your system more stable. There are two FIFO modes; 64-byte FIFO and 256-byte FIFO. The FCR (FIFO Control Register) and AFR (Additional Feature Register) enable FIFO and the Transmit Interrupt Trigger Level can be selected by the registers.

Xon Any Character Function

While RX software flow control function is activated, the data in TX FIFO are transmitted when Xon character arrives, and transmission is suspended when Xoff character arrives. This status is called ‘Xoff status’. Transmission is restarted when status changes to ‘Xon status’ by incoming Xon character or Xon Any function that changes status when any data arrives.

Xoff Re-transmit Function

While TX software flow control function is activated, Xoff character is transmitted when the number of data exceeds a certain value. Though the external UART receives Xoff character, this character may not be recognized for some reasons and the data transmission may be continued. In this case, overflow may occur in RX FIFOs. Unlike the conventional UARTs, SB16C1054 can handle this with the Xoff Re-transmit function.