參數(shù)資料
型號(hào)： MSM82C37B-5RS
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： Programmable DMA Controller(可編程DMA控制器)
中文描述： 可編程DMA控制器（可編程DMA的控制器）
文件頁(yè)數(shù)： 23/33頁(yè)
文件大?。?/td> 209K
代理商： MSM82C37B-5RS
23/33
Semiconductor
MSM82C37B-5RS/GS/VJS
Mode Register
Each channel is equipped with a 6-bit write-only mode register, which is decided by setting DB
0
,
DB
1
which channel is to be written when writing from CPU is programming status. The bit
description is outlined in Figure 4.
This register is not cleared by Reset or Master Clear instruction.
DB
7
00: Channel 0 Selected
01: Channle 1 Selected
10: Channel 2 Selected
11: Channle 3 Selected
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
00: Verify Transfer
01: Write Transfer
10: Read Transfer
11: Disabled
(Invalid When DB
6
·DB
7
="11")
0: Auto Initialize Disabled
1: Auto Initialize Enabled
0: Address Increment (+1) Selected
1: Address Decrement (-1) Selected
00: Demand Transfer Mode Selected
01: Single Transfer Mode Selected
10: Block Transfer Mode Selected
11: Cascade Mode Selected
Fig.4 Mode Register
Request Register
In addition to using the DREQ signal, the MSM82C37B-5 can request DMA transfers by software
means. This involves setting the request bit of request register. Each channel has a corresponding
request bit in the request register, and the order of priority of these bits is determined by the
priority decision circuit irrespective of the mask register. DMA transfers are acknowledged in
accordance with the decided order of priority.
All request bits are reset when the TC is reached, and when the request bit of a certain channel
has been received, all other request bits are cleared. When a memory-memory transfer is
commenced, the channel 0 request bit is set. The bit description is outlined in Figure 5.
DB
7
00: Channel 0 Selected
01: Channel 1 Selected
10: Channel 2 Selected
11: Channel 3 Selected
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
0: Request Bit Cleared
1: Request Bit Set
Not Used
Fig.5 Request Register
相關(guān)PDF資料
PDF描述
MSM82C37B-5VJS Programmable DMA Controller(可編程DMA控制器)
MSM82C51A-2(中文) Universal Synchronous Asynchronous Receiver Transmitter(通用同步/異步接收發(fā)送器,同步通訊最高可達(dá)64Kbps,異步通訊最高可達(dá)38.4Kbps)
MSM82C51A-2 Universal Synchronous Asynchronous Receiver Transmitter(通用同步/異步接收發(fā)送器,同步通訊最高可達(dá)64Kbps,異步通訊最高可達(dá)38.4Kbps)
MSM82C53-2 Programmable Universal Timers(可編程中斷定時(shí)器,最高計(jì)數(shù)頻率8MHz)
MSM82C54-2 Programmable Universal Timers(可編程中斷定時(shí)器,最高計(jì)數(shù)頻率10MHz)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MSM82C37B-5VJS 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:PROGRAMMABLE DMA CONTROLLER
MSM82C43 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:INPUT/OUTPUT PORT EXPANDER
MSM82C51A-2GS 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:UNIVERSAL SYNCHRONOUS ASYNCHRONOUS RECEIVER TRANSMITTER
MSM82C51A-2GS-K 制造商:OK International 功能描述:USART, 32 Pin, Plastic, SOP 制造商:OKI Semiconductor 功能描述:USART, 32 Pin, Plastic, SOP
MSM82C51A-2JS 制造商:ROHM Semiconductor 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*