- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄366309 > A8237 (Altera Corporation) PROGRAMMABLE DMA CONTROLLER PDF資料下載
參數(shù)資料
| 型號： | A8237 |
| 廠商： | Altera Corporation |
| 英文描述： | PROGRAMMABLE DMA CONTROLLER |
| 中文描述： | 可編程DMA控制器 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 269K |
| 代理商： | A8237 |
Altera Corporation
7
a8237 Programmable DMA Controller Data Sheet
niowout
Output
Output
Low
Low
I/O write output. Write strobe to I/O devices as DMA reads from memory.
Memory read. Read strobe to memory elements during DMA reads or
memory-to-memory transfers.
Memory write. Write strobe to memory elements during DMA writes or
memory-to-memory transfers.
Address output. During DMA service,
aout[7..0]
comprises the least
significant byte of the DMA address.
DMA acknowledge bus. Programmable polarity. Indicates a DMA cycle
has been granted to the peripheral.
Data bus output. The microprocessor reads data from internal registers
via the
dbout[7..0]
bus. Also used to output the most significant byte
of the DMA address and temporary data held during memory-to-memory
transfers.
nmemr
nmemw
Output
Low
aout[7..0]
Output
–
dack[3..0]
Output
–
dbout[7..0]
Output
–
Table 1. a8237 Ports (Part 2 of 2)
Name
Type
Polarity
Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| a8251 | Programmable Communications Interface(可編程通信接口) |
| a8255 | Programmable Peripheral Interface Adapter(可編程外圍接口適配器) |
| A8255 | PROGRAMMABLE PERIPHERAL INTERFACE ADAPTER |
| a8259 | Programmable Interrupt Controller(可編程中斷控制器) |
| A8406-53 | Various types of cables for frame grabber |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A82370-16 | 制造商:Rochester Electronics LLC 功能描述: |
| A82380-16 | 制造商:Intel 功能描述:PERIPHERAL (MULTIFUNCTION) CONTROLLER, 132 Pin, PGA |
| A82380-20 | 制造商:Rochester Electronics LLC 功能描述: |
| A82380-25 | 制造商:Rochester Electronics LLC 功能描述: |
| A82385-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Cache Controller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。