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MC68302FC20 Datasheet(PDF) 8 Page - Motorola, Inc |
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MC68302FC20 Datasheet(HTML) 8 Page - Motorola, Inc |
8 / 480 page ![]() Table of Contents Paragraph Title Page Number Number viii MC68302 USER’S MANUAL MOTOROLA 4.4.5 Serial Interface Registers.......................................................................4-19 4.4.5.1 Serial Interface Mode Register (SIMODE).............................................4-19 4.4.5.2 Serial Interface Mask Register (SIMASK)..............................................4-22 4.5 Serial Communication Controllers (SCCs).............................................4-22 4.5.1 SCC Features ........................................................................................4-24 4.5.2 SCC Configuration Register (SCON).....................................................4-24 4.5.2.1 Asynchronous Baud Rate Generator Examples ....................................4-26 4.5.2.2 Synchronous Baud Rate Generator Examples ......................................4-27 4.5.3 SCC Mode Register (SCM)....................................................................4-27 4.5.4 SCC Data Synchronization Register (DSR)...........................................4-31 4.5.5 Buffer Descriptors Table ........................................................................4-32 4.5.6 SCC Parameter RAM Memory Map.......................................................4-34 4.5.6.1 Data Buffer Function Code Register (TFCR, RFCR) .............................4-35 4.5.6.2 Maximum Receive Buffer Length Register (MRBLR) ............................4-36 4.5.6.3 Receiver Buffer Descriptor Number (RBD#) ..........................................4-36 4.5.6.4 Transmit Buffer Descriptor Number (TBD#)...........................................4-36 4.5.6.5 Other General Parameters.....................................................................4-37 4.5.7 SCC Initialization....................................................................................4-37 4.5.8 Interrupt Mechanism ..............................................................................4-38 4.5.8.1 SCC Event Register (SCCE) .................................................................4-38 4.5.8.2 SCC Mask Register (SCCM) .................................................................4-39 4.5.8.3 SCC Status Register (SCCs) .................................................................4-39 4.5.8.4 Bus Error on SDMA Access...................................................................4-40 4.5.9 SCC Transparent Mode .........................................................................4-41 4.5.10 Disabling the SCCs................................................................................4-42 4.5.11 UART Controller.....................................................................................4-43 4.5.11.1 Normal Asynchronous Mode..................................................................4-45 4.5.11.2 Asynchronous DDCMP MODE ..............................................................4-46 4.5.11.3 UART Memory Map ...............................................................................4-46 4.5.11.4 UART Programming Model....................................................................4-48 4.5.11.5 UART Command Set .............................................................................4-49 4.5.11.6 UART Address Recognition ...................................................................4-50 4.5.11.7 UART Control Characters and Flow Control..........................................4-51 4.5.11.8 Send Break ............................................................................................4-53 4.5.11.9 Send Preamble (IDLE)...........................................................................4-53 4.5.11.10 Wakeup Timer........................................................................................4-53 4.5.11.11 UART Error-Handling Procedure ...........................................................4-54 4.5.11.12 Fractional Stop Bits................................................................................4-55 4.5.11.13 UART Mode Register.............................................................................4-56 4.5.11.14 UART Receive Buffer Descriptor (Rx BD) .............................................4-57 4.5.11.15 UART Transmit Buffer Descriptor (Tx BD).............................................4-61 4.5.11.16 UART Event Register.............................................................................4-63 4.5.11.17 UART MASK Register............................................................................4-65 4.5.11.18 S-Records Programming Example ........................................................4-65 4.5.12 HDLC Controller.....................................................................................4-66 |