The TL16C750FN is an Asynchronous Communications Element (ACE) which in turn is a functional upgrade of the TL16C450. Can be placed in an alternate mode (FIFO mode). This relieves the CPU of excessive software overhead by buffering received and transmitted characters. The receiver and transmitter FIFOs store up to 64 bytes including three additional bits of error status per byte for the receiver FIFO. The user can choose between a 16-byte FIFO mode or an extended 64-byte FIFO mode. In the FIFO mode, there is a selectable auto-flow control feature that can significantly reduce software overload and increase system efficiency by automatically controlling serial data flow-through the RTS\ output and the CTS\ input signals. It performs serial-to-parallel conversion 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.
Pin-to-Pin-compatible with the existing TL16C550B/C
Programmable Auto-RTS\ and Auto-CTS\
In Auto- CTS\ mode, CTS\ controls transmitter
In Auto- RTS\ mode, receiver FIFO contents and threshold control RTS\
Capable of running with all existing TL16C450 software
Register selectable sleep mode and low-power mode
Independent Receiver Clock Input
Independently controlled transmit, receive, line status and data set interrupts
False start bit detection
Complete status reporting capabilities
3-state Output CMOS drive capabilities for bidirectional data bus and control bus
Line break detection and generation
Loopback controls for communications link fault isolation
Break, parity, overrun and framing-error simulation
Fully prioritized interrupt system controls
Modem control functions ( CTS\, RTS\, DSR\, DTR\, RI\ and DCD\\)
