SDA6000 Datasheet, PDF (197/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Peripherals
7.3
Asynchronous/Synchronous Serial Interface
The Asynchronous/Synchronous Serial Interface ASC0 provides serial communication
between M2 and other microcontrollers, microprocessors or external peripherals. It
provides the following features:
• Full duplex asynchronous operating modes
– 8- or 9-bit data frames, LSB first
– Parity bit generation/checking
– One or two stop bits
– Baud rate from 2.0625 MBaud to 0.48 Baud (@ 33 MHz clock)
– Multiprocessor mode for automatic address/data byte detection
– Loop-back capability
• Support for IrDA data transmission/reception up to max. 115.2 KBaud
• Autobaud detection unit for asynchronous operating modes
– Detection of standard baud rates
1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 Baud
– Detection of non-standard baud rates
– Detection of asynchronous modes
7 bit, even parity; 7 bit, odd parity;
8 bit, even parity; 8 bit, odd parity; 8 bit, no parity
– Automatic initialization of control bits and baud rate generator after detection
– Detection of a serial two-byte ASCII character frame
• Half-duplex 8-bit synchronous operating mode
– Baud rate from 4.125 MBaud to 420 Baud (@ 33 MHz clock)
• Double buffered transmitter/receiver
• Interrupt generation
– on a transmitter buffer empty condition
– on a transmit last bit of a frame condition
– on a receiver buffer full condition
– on an error condition (frame, parity, overrun error)
– on the start and the end of a autobaud detection
Figure 7-22 shows a block diagram of the ASC with its operating modes (asynchronous
and synchronous mode.)
Users Manual
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2000-06-15