XR88C92

XR88C92 / XR88C192 Data Sheet Dual Universal Asynchronous Receiver and Transmitter General Description The XR88C92 and XR88C192 are Dual Universal Asynchronous Receivers and Transmitters (DUART) with an 8 byte (XR88C92) or 16 byte (XR88C192) transmit and receive FIFO. The XR88C92 and XR88C192 are each pin and functional replacements for the SC26C92, and are improved versions of the Philips SCC2692 UART with faster data access and other additional features. The operating speed of the receiver and transmitter can be selected independently from a table of eighteen fixed baud rates, a 16X clock derived from a programmable counter / timer, or an external 1X or 16X clock. The baud rate generator and counter / timer can operate directly from a crystal or from an external clock input. The XR88C92 and XR88C192 provide a power-down mode in which the oscillator is stopped but the register contents are retained. The XR88C92 and XR88C192 are fabricated in an advanced CMOS process to achieve low power and high speed requirements. Ordering Information - page 33 Pinout Features Added feature in devices with top marking of "D2" and newer:  5V tolerant inputs ■ Pin-to-pin and functionally compatible to SC26C92 ■ Enhanced Multidrop mode operation with separate storage for address and data tags (9th bit) ■ 8 byte transmit / receive FIFO (XR88C92) ■ 16 byte transmit / receive FIFO (XR88C192) ■ Standard baud rates from 50bps to 230.4kbps ■ Non-standard baud rate of up to 1Mbps ■ Transmit and r...