Overview Of Uart - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 21 UART
21.1

Overview of UART

UART is a general purpose serial data communication interface for synchronous or
asynchronous (start-stop synchronization) communications with external devices. Not
only the typical function of bidirectional communication (normal mode), but also the
function of master/slave communication (multiprocessor mode: only supported master
side) are supported.
UART Function
UART function
UART, or a general serial data communication interface that sends and receives serial data to and from
other CPU and peripherals, has the functions listed in Table 21.1-1.
Table 21.1-1 UART Function
Data buffer
Transfer mode
Baud rate
Data length
Signal type
Detection of receive error
Interrupt request
Master/slave type communication
function (multi processor mode)
Note:
At clock synchronous transfer, data is transferred alone with neither start nor stop bit added.
476
Full-duplicate double-buffer
• Clock synchronous (No start/stop bit)
• Clock asynchronous (start-stop synchronization to clock)
• Dedicate baud-rate generator
• External clock input enabled.
• 8 bits or 7 bits (in the asynchronous normal mode only)
• 1 to 8 bit (s) (synchronous mode only)
NRZ (Non Return to Zero) type
• Framing error
• Overrun error
• Parity error (Not supported in operation mode 1)
• Receive interrupt (receive, detection of receive error)
• Transmission interrupt (transmission complete)
• Extended intelligent I/O service for both sending and receiving
OS) µDMA
2
Support of (EI
Capable of 1 (master) to n (slaves) communication
(available just as master)
Functions