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<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<project id="47a0c59e-74d6-4b5f-b391-8fce0b407fe0" name="8237A" version="1">
<files>
<filefolder id="100bf905-fbc1-4c20-9835-8bfb085c996b" name="子模块">
<file relativepath="channel.dlsche"/>
<file relativepath="regs.dlsche"/>
<file relativepath="write_read.dlsche"/>
<file relativepath="fsm.dlsche"/>
</filefolder>
<file relativepath="8237A.dlsche"/>
<file relativepath="README.md"/>
<file relativepath="8237A.pdf"/>
</files>
</project>
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8237A.pdf 0 → 100644
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README.md 0 → 100644
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# 说明
Intel 8237A DMA 控制器
# Datasheet
[8237A.pdf](8237A.pdf)
# 原理图
![raw svg](8237A.dlsche.svg)
\ No newline at end of file
channel.dlsche 0 → 100644
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channel.dlsche.svg 0 → 100644
浏览文件 @ fb47c3ef
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="965" y="2465">D5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="965" y="2485">D6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="965" y="2505">D7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2365">Q0</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2385">Q1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2405">Q2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2425">Q3</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2445">Q4</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2465">Q5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2485">Q6</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="2505">Q7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="992" y="2655">^U\D</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="979" y="2585">MAX\MIN</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="985" y="2675">CLK</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="965" y="3265">D5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="965" y="3305">D7</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="3165">Q0</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="3185">Q1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1049" y="3265">Q5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="992" y="3455">^U\D</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1749" y="3195">D1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1749" y="3225">D2</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="start" x="1749" y="3285">D4</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="3845">AB1</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="3875">AB2</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="3905">AB3</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="3935">AB4</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="3965">AB5</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="3995">AB6</text>
<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="25" font-weight="400" text-anchor="start" x="1832" y="4025">AB7</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="1012" y="4075">输出当前地址</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="372" y="4075">在字节数减为0之前，DACK信号始终有效</text>
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<text alignment-baseline="after-edge" fill="#800000" font-family="Times New Roman" font-size="12" font-weight="400" text-anchor="start" x="782" y="3455">M5</text>
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<text alignment-baseline="after-edge" fill="#000000" font-family="Times New Roman" font-size="30" font-weight="700" text-anchor="start" transform="rotate(-90 122 2665)" x="122" y="2665">1</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="25" font-weight="700" text-anchor="start" transform="rotate(-90 52 2665)" x="52" y="2665">U3</text>
<text alignment-baseline="after-edge" fill="#000000" font-family="Arial" font-size="12" font-weight="700" text-anchor="start" transform="rotate(-90 72 2705)" x="72" y="2705">CONSTANT1</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="12" font-weight="400" text-anchor="start" x="192" y="2645">字节数递减</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="302" y="3525">完成一次DMA传送</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="12" font-weight="400" text-anchor="start" x="572" y="3465">M5=0，递增，M5=1，递减</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="412" y="2605">高电平，停止工作，停止计数</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="1192" y="725">M5=1，地址递减</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="815" y="565">D0</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="815" y="595">D1</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="815" y="685">D4</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="815" y="715">D5</text>
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<text alignment-baseline="central" fill="#000000" font-family="Courier New" font-size="17" font-weight="400" text-anchor="end" x="815" y="745">D6</text>
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fsm.dlsche 0 → 100644
浏览文件 @ fb47c3ef
添加文件
fsm.dlsche.svg 0 → 100644
浏览文件 @ fb47c3ef
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="1426" y="1244">高电平，有通道请求</text>
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="16" y="1084">利用时钟下降沿触发状态转换，提供存储器或寄存器写使能，上升沿触发写操作</text>
<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="16" y="1134">即把写使能和写操作分为两个步骤</text>
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regs.dlsche 0 → 100644
浏览文件 @ fb47c3ef
添加文件
regs.dlsche.svg 0 → 100644
浏览文件 @ fb47c3ef
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<text alignment-baseline="after-edge" fill="#000080" font-family="宋体" font-size="25" font-weight="400" text-anchor="start" x="1770" y="2170">约定：DREQ高电平有效，有效时，对应通道可以申请DMA传送服务</text>
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write_read.dlsche.svg 0 → 100644
浏览文件 @ fb47c3ef
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