
xxiv
MPC850 Integrated Communications Microprocessor Users Manual
MOTOROLA
CONTENTS
Paragraph
Number
Title
Page
Number
Chapter 26
SCC BISYNC Mode
26.1
26.2
26.3
26.4
26.5
26.6
26.7
26.8
26.9
26.10
26.11
26.12
26.13
26.14
26.15
26.16
26.17
Features...............................................................................................................26-2
SCC BISYNC Channel Frame Transmission.....................................................26-2
SCC BISYNC Channel Frame Reception..........................................................26-3
SCC BISYNC Parameter RAM..........................................................................26-4
SCC BISYNC Commands..................................................................................26-5
SCC BISYNC Control Character Recognition...................................................26-6
BISYNC SYNC Register (BSYNC)...................................................................26-7
SCC BISYNC DLE Register (BDLE)................................................................26-8
Sending and Receiving the Synchronization Sequence......................................26-9
Handling Errors in the SCC BISYNC................................................................26-9
BISYNC Mode Register (PSMR).....................................................................26-10
SCC
BISYNC Receive BD (RxBD)................................................................26-12
SCC BISYNC Transmit BD (TxBD)...............................................................26-13
BISYNC Event Register (SCCE)/BISYNC Mask Register (SCCM) ..............26-15
SCC Status Registers (SCCS)...........................................................................26-16
Programming the SCC BISYNC Controller.....................................................26-17
SCC BISYNC Programming Example.............................................................26-18
Chapter 27
SCC Ethernet Mode
27.1
27.2
27.3
27.4
27.5
27.6
27.7
27.8
27.9
27.10
27.11
27.12
27.13
27.14
27.15
27.16
27.17
27.18
Ethernet on the MPC850....................................................................................27-2
Features...............................................................................................................27-3
Learning Ethernet on the MPC850.....................................................................27-4
Connecting the MPC850 to Ethernet..................................................................27-5
SCC Ethernet Channel Frame Transmission......................................................27-6
SCC Ethernet Channel Frame Reception...........................................................27-7
SCC Ethernet Parameter RAM...........................................................................27-8
Programming the Ethernet Controller..............................................................27-10
SCC Ethernet Commands.................................................................................27-10
SCC Ethernet Address Recognition .................................................................27-12
Hash Table Algorithm......................................................................................27-13
Interpacket Gap Time.......................................................................................27-13
Handling Collisions..........................................................................................27-13
Internal and External Loopback .......................................................................27-14
Full-Duplex Ethernet Support ..........................................................................27-14
Handling Errors in the Ethernet Controller ......................................................27-14
Ethernet Mode Register (PSMR)......................................................................27-15
SCC Ethernet Receive Buffer Descriptor.........................................................27-17