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AM8530 Datasheet(PDF) 5 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) 5 Page - Advanced Micro Devices

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Table of Contents
AMD
3.9
Block Transfers
3–15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9.1
Wait on Transmit
3–16
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9.2
Wait on Receive
3–16
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9.3
DMA Requests
3–17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9.3.1 DMA Request on Transmit
(using
W/REQ)
3–17
. . . . . . . . . . . . . . . . . . . . . .
3.9.3.2 DMA Request on Transmit
(using
DTR/REQ)
3–18
. . . . . . . . . . . . . . . . . . . .
3.9.3.3
DTR/REQ Deactivation Timing
3–19
. . . . . . . . . .
3.9.3.4 DMA Request on Receive (using
W/REQ)
3–20
.
Chapter 4
Data Communication Modes Functional Description
4.1
Introduction
4–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2
Protocols
4–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.1
Asynchronous
4–3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2
Synchronous Transmission
4–4
. . . . . . . . . . . . . . . . . . . .
4.2.2.1 Synchronous Character-Oriented
Protocol
4–4
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2.2 Synchronous Bit-Oriented
4–4
. . . . . . . . . . . . . .
4.3
Mode Selection
4–5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4
Receiver Overview
4–6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.1
Rx Character Length
4–7
. . . . . . . . . . . . . . . . . . . . . . . . .
4.4.2
Rx Parity
4–8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.3
Rx Modem Control
4–9
. . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5
Transmitter Overview
4–9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5.1
Tx Character Length
4–9
. . . . . . . . . . . . . . . . . . . . . . . . .
4.5.2
Tx Parity
4–11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5.3
Break Generation
4–11
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5.4
Transmit Modem Control
4–11
. . . . . . . . . . . . . . . . . . . . . .
4.5.5
Auto
RTS Reset
4–11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.6
Asynchronous Mode Operation
4–12
. . . . . . . . . . . . . . . . . . . . . . .
4.6.1
Receiver Operation
4–12
. . . . . . . . . . . . . . . . . . . . . . . . . .
4.6.1.1 Receiver Initialization
4–12
. . . . . . . . . . . . . . . . .
4.6.1.2 Framing Error
4–12
. . . . . . . . . . . . . . . . . . . . . . .
4.6.1.3 Break Detection
4–13
. . . . . . . . . . . . . . . . . . . . . .
4.6.1.4 Clock Selection
4–13
. . . . . . . . . . . . . . . . . . . . . .
4.6.2
Transmitter Operation
4–13
. . . . . . . . . . . . . . . . . . . . . . . .
4.6.2.1 Transmitter Initialization
4–13
. . . . . . . . . . . . . . .
4.6.2.2 Stop Bit Selection
4–13
. . . . . . . . . . . . . . . . . . . .
4.7
SDLC Mode Operation
4–14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.1
Receiver Operation
4–14
. . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.1.1 Flag Detect Output
4–14
. . . . . . . . . . . . . . . . . . .
4.7.1.2 Receiver Initialization
4–14
. . . . . . . . . . . . . . . . .
4.7.1.3 10x19-Bit Frame Status FIFO
4–14
. . . . . . . . . . .
4.7.1.3.1 FIFO Enabling/Disabling
4–15
. . . . . . . .
4.7.1.3.2 FIFO Read Operation
4–15
. . . . . . . . . .
4.7.1.3.3 FIFO Write Operation
4–15
. . . . . . . . . .
4.7.1.3.4 14-Bit Byte Counter
4–15
. . . . . . . . . . .
4.7.1.3.5 Am85C30 Frame Status
FIFO Operation Clarification
4–18
. . . . .
4.7.1.3.6 Am85C30 Aborted Frame
Handling When Using the 10x19
Frame Status FIFO
4–19
. . . . . . . . . . . .
4.7.1.4 Address Search Mode
4–19
. . . . . . . . . . . . . . . . .
4.7.1.5 Abort Detection
4–20
. . . . . . . . . . . . . . . . . . . . . .
4.7.1.6 Residue Bits
4–21
. . . . . . . . . . . . . . . . . . . . . . . .
4.7.2
SDLC Mode CRC Polynomial Selection
4–21
. . . . . . . . . .
4.7.2.1 Rx CRC Initialization
4–22
. . . . . . . . . . . . . . . . . .
4.7.2.2 Rx CRC Enabling
4–22
. . . . . . . . . . . . . . . . . . . .



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