SC16C652BIBS,151 is a 2-channel universal asynchronous receiver and transmitter with 32-byte FIFOs and an infrared encoder/decoder. It is used for serial data communications. Its principal function is to convert parallel data into serial data and vice versa. It can handle serial data rates up to 5Mbit/s. The SC16C652B is pin-compatible with the SC16C2550. It will power up to be functionally equivalent to the 16C2450. It provides enhanced UART functions with 32-byte FIFOs, modem control interface, DMA mode data transfer, and IrDA encoder/decoder. The DMA mode data transfer is controlled by the FIFO trigger levels and the active low TXRDY and active low RXRDY signals. On-board status registers provide the user with error indications and operational status. System interrupts and modem control features may be tailored by software to meet specific user requirements. An internal loopback capability allows on-board diagnostics.