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AM8530 Datasheet(PDF) 6 Page - Advanced Micro Devices

Part # AM8530
Description  Serial Communications Controller
PDF  194 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM8530 Datasheet(HTML) 6 Page - Advanced Micro Devices

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AMD
Table of Contents
4.7.2.3 CRC Error
4–22
. . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.2.4 CRC Character Reception
4–22
. . . . . . . . . . . . . .
4.7.3
End of Frame (EOF)
4–26
. . . . . . . . . . . . . . . . . . . . . . . . .
4.8
Transmitter Operation
4–27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8.1
Transmitter Initialization
4–27
. . . . . . . . . . . . . . . . . . . . . . .
4.8.2
Mark/Flag Idle Generation
4–27
. . . . . . . . . . . . . . . . . . . . .
4.8.3
Auto Flag Mode
4–27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8.4
Abort Generation
4–28
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8.5
Auto Transmit CRC Generator Preset
4–28
. . . . . . . . . . . .
4.8.6
CRC Transmission
4–28
. . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8.7
Auto Tx Underrun/EOM Latch Reset
4–29
. . . . . . . . . . . . .
4.8.8
Transmitter Disabling
4–29
. . . . . . . . . . . . . . . . . . . . . . . . .
4.8.9
NRZI Mode Transmitter Disabling
4–29
. . . . . . . . . . . . . . .
4.9
SDLC Loop Mode
4–30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.9.1
Going on Loop
4–30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.9.1.1 On Loop Program Sequence
4–31
. . . . . . . . . . . .
4.9.1.2 On Loop Message Transmission
4–31
. . . . . . . . .
4.9.1.3 On Loop Transmit Message
Programming Sequence
4–31
. . . . . . . . . . . . . . .
4.9.2
Going off Loop
4–31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.9.2.1 Off Loop Programming Sequence
4–32
. . . . . . . .
4.9.3
SDLC Loop Initialization
4–32
. . . . . . . . . . . . . . . . . . . . . .
4.9.4
SDLC Loop NRZI Encoding Enabled
4–32
. . . . . . . . . . . . .
4.10 Synchronous Mode Operation
4–32
. . . . . . . . . . . . . . . . . . . . . . . .
4.10.1 Receiver Operation
4–32
. . . . . . . . . . . . . . . . . . . . . . . . . .
4.10.1.1 SYNC Detect Output
4–33
. . . . . . . . . . . . . . . . . .
4.10.1.1.1 MONOSYNC Mode
4–33
. . . . . . . . .
4.11.1.2 BISYNC Mode
4–33
. . . . . . . . . . . . . . . . . . . . . . .
4.10.1.2 SYNC Character Length
4–34
. . . . . . . . . . . . . . .
4.10.1.3 Receiver Initialization
4–34
. . . . . . . . . . . . . . . . .
4.10.1.4 Sync Character Removal
4–34
. . . . . . . . . . . . . . .
4.10.1.5 CRC Polynomial Selection
4–36
. . . . . . . . . . . . .
4.10.1.5.1 Rx CRC Initialization
4–36
. . . . . . . .
4.10.1.5.2 Rx CRC Enabling
4–36
. . . . . . . . . . .
4.10.1.5.3 Rx CRC Character Exclusion
4–36
. .
4.10.1.5.4 CRC Error
4–37
. . . . . . . . . . . . . . . . .
4.10.2 Transmitter Operation
4–37
. . . . . . . . . . . . . . . . . . . . . . . .
4.10.2.1 Transmitter Initialization
4–38
. . . . . . . . . . . . . . .
4.10.2.2 CRC Polynomial Selection
4–38
. . . . . . . . . . . . .
4.10.2.2.1 Tx CRC Initialization
4–38
. . . . . . . . .
4.10.2.2.2 Tx CRC Enabling
4–38
. . . . . . . . . . .
4.10.2.2.3 CRC Transmission
4–38
. . . . . . . . . .
4.10.2.2.4 Tx CRC Character Exclusion
4–39
. .
4.10.2.3 Transparent Transmission
4–39
. . . . . . . . . . . . . .
4.10.2.4 Transmitter to Receiver Synchronization
4–39
. . .
4.10.2.4.1 Transmitter Disabling
4–40
. . . . . . . .
4.10.2.5 External SYNC Mode
4–40
. . . . . . . . . . . . . . . . .
4.10.2.5.1 SDLC External SYNC Mode
4–41
. . .
4.10.2.5.2 Synchronous External
Sync Mode
4–41
. . . . . . . . . . . . . . . .
Chapter 5
Support Circuitry Programming
5.1
Introduction
5–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2
Clock Options
5–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.1
Crystal Oscillator
5–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2.2
Receive Clock Source
5–4
. . . . . . . . . . . . . . . . . . . . . . . .
5.2.3
Transmit Clock Source
5–4
. . . . . . . . . . . . . . . . . . . . . . .
5.2.4
Clock Programming
5–5
. . . . . . . . . . . . . . . . . . . . . . . . . .
5.3
Baud Rate Generator (BRG)
5–6
. . . . . . . . . . . . . . . . . . . . . . . . .



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