Fujitsu 8FX User Manual

MB95630H Series
198 FUJITSU SEMICONDUCTOR LIMITED MN702-00009-2v0-E
CHAPTER 14 LIN-UART
14.1 Overview
14.1 Overview
The LIN (Local Interconnect Network)-UART is a general-purpose serial data
communication interface for synchronous or asynchronous (start-stop
synchronization) communication with external devices. In addition to a bi-
directional communication function (normal mode) and master/slave
communication function (multiprocessor mode: supports both master and
slave operation), the LIN-UART also supports special functions with the LIN
bus.
■ Functions of LIN-UART
The LIN-UART is a general-purpose serial data communication interface for exchanging serial
data with other CPUs and peripheral devices. Table 14.1-1 lists the functions of the LIN-
UART.
Table 14.1-1 Functions of LIN-UART
Function
Data buffer Full-duplex double-buffer
Serial input
The LIN-UART oversamples received data for five times to determine the received
value by majority of sampling values (only asynchronous mode).
Transfer mode
• Clock synchronous (Select start/stop synchronization, or start/stop bits)
• Clock asynchronous (Start/stop bits available)
Baud rate
• Dedicated baud rate generator provided (made of a 15-bit reload counter)
• The external clock can be inputted. It can be adjusted by the reload counter.
Data length
• 7 bits (not in synchronous or LIN mode)
• 8 bits
Signal type NRZ (Non Return to Zero)
Start bit timing Synchronization with the start bit falling edge in asynchronous mode.
Reception error detection
• Framing error
• Overrun error
• Parity error (Not supported in operating mode 1)
Interrupt request
• Receive interrupts (reception completed, reception error detected, LIN synch break
detected)
• Transmit interrupts (transmit data empty)
• Interrupt requests to TII0 (LIN synch field detected: LSYN)
Master/slave mode communication
function (Multiprocessor mode)
Capable of 1 (master) to n (slaves) communication
(supports both the master and slave system)
Synchronous mode Transmit side/receive side of serial clock
Pin access Serial I/O pin states can be read directly.
LIN bus option
• Master device operation
• Slave device operation
• LIN synch break detection
• LIN synch break generation
• Detection of LIN synch field start/stop edges connected to the 8/16-bit composite
timer
Synchronous serial clock
Continuous output to the SCK pin enabled for synchronous communication using the
start/stop bits
Clock delay option
Special synchronous clock mode for delaying the clock (used in Serial Peripheral
Interface (SPI))

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English