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Table Of Contents - Motorola MC68838 User Manual

Media access controller
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Paragraph
Number
1.1
Overview........................................................................................................... 1-2
1.2
Chip Features.................................................................................................. 1-2
2.1
Node Processor Interface Logic................................................................... 2-1
2.2
Receive Data Path.......................................................................................... 2-1
2.2.1
Receive Latch.............................................................................................. 2-2
2.2.2
Receive CRC Checker............................................................................... 2-3
2.2.3
Sent Count................................................................................................... 2-3
2.2.4
Counters....................................................................................................... 2-3
2.2.5
Receive Finite State Machine................................................................... 2-3
2.2.6
Address Comparator.................................................................................. 2-4
2.2.7
Receive Host Interface............................................................................... 2-4
2.3
Transmit Data Path......................................................................................... 2-4
2.3.1
Transmit Data Host lnterface .................................................................... 2-5
2.3.2
Send Frame Logic...................................................................................... 2-5
2.3.3
Capture Token Logic.................................................................................. 2-5
2.3.4
Transmit CRC Generator........................................................................... 2-6
2.3.5
Transmit Finite State Machine.................................................................. 2-6
2.3.6
Timers ........................................................................................................... 2-6
2.3.7
Transmit Data Latch (and Repeat Function).......................................... 2-7
2.4
Test and Clock Logic...................................................................................... 2-7
3.1
Register Types................................................................................................. 3-3
3.1.1
Read/Write Registers.................................................................................. 3-3
3.1.2
Read/Control Write Registers ................................................................... 3-3
3.1.3
Read-Only/Clear Registers ....................................................................... 3-3
3.1.4
Read-Only Registers .................................................................................. 3-3
3.2
Control and Status Registers........................................................................ 3-4
3.2.1
Control Register A (MAC_CNTRL_A) ..................................................... 3-4
3.2.2
Control Register B (MAC_CNTRL_B) ..................................................... 3-8
MOTOROLA

TABLE OF CONTENTS

Title
Section 1
Section 2
Section 3
MC68838 USER'S MANUAL
P a g e
Number
iii

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