Z8 Encore! XP® 4K Series
Product Specification
89
UART
Overview
The universal asynchronous receiver/transmitter (UART) is a full-duplex communication
channel capable of handling asynchronous data transfers. The UART uses a single 8-bit
data mode with selectable parity. Features of the UART include:
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8-bit asynchronous data transfer
Selectable even- and odd-parity generation and checking
Option of one or two STOP bits
Separate transmit and receive interrupts
Framing, parity, overrun and break detection
Separate transmit and receive enables
16-bit baud rate generator (BRG)
Selectable MULTIPROCESSOR (9-bit) mode with three configurable interrupt schemes
Baud rate generator (BRG) can be configured and used as a basic 16-bit timer
Driver enable (DE) output for external bus transceivers
Architecture
The UART consists of three primary functional blocks: transmitter, receiver, and baud rate
generator. The UART’s transmitter and receiver function independently, but employ the
same baud rate and data format. Figure 10 illustrates the UART architecture.
PS022815-0206
UART
ZILOG [ ZILOG, INC. ]
