MC68000 MOTOROLA [Motorola, Inc], MC68000 Datasheet - Page 8

• Manufacturer Part Number: MC68000
• Manufacturer: MOTOROLA [Motorola, Inc]

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