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參數(shù)資料
| 型號： | SAA7780 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | ThunderBird Q3DE PCI Audio Accelerator(雷鳥 Q3DE PCI音頻加速器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP160 |
| 封裝： | 28 X 28 MM, 3.42 MM HEIGHT, PLASTIC, QFP-160 |
| 文件頁數(shù)： | 45/70頁 |
| 文件大?。?/td> | 348K |
| 代理商： | SAA7780 |
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ThunderBird Q3D PCI Audio
Accelerator
SAA7780
Philips Semiconductors
Product Specification
1999 Sep 30
45
DMA Channel B Base Address Register - DMABBASE (RW)
5:4
DMAABASE
RW
DMA channel A programmable base address, bits 5:4. These bits select a
channel number for this channel. In LAM DMAABASE[5:4] select the channel
number that this DMA represents, it should be different than
DMABBASE[5:4].
3
R
RO
Reserved. This bit must always be zero.
2:1
XFRSIZ
RW
DMA transfer size.
00 = reserved
10 = double word
11 = reserved
01 = reserved
0
DDMAAEN
RW
DDMA channel A enable. This DDMA channel is enabled when this bit is set
to a one.
PCI CFG 0
D31
D30
D29
D28
D27
D26
D25
D24
Offset 42h
DMABBASE[15:8]
POR Value
0
0
0
0
0
0
0
0
D23
D22
D21
D20
D19
D18
D17
D16
DMAB
BASE[7]
R
DMABBASE[5:4]
R
R
R
DDMAB
EN
POR Value
0
0
0
0
0
0
0
0
Bit
Name
R/W
Function
15:7
DMABBASE
RW
DMA channel B programmable base address. Normally this base is set the
same as DMA channel A except for DMABBASE[5:4] which selects the
channel number. This is a requirement of some PC chipsets. Future chipsets
may eliminate this requirement. In LAM DMABBASE[5:4] select the channel
number that this DMA represents, it should be different than
DMAABASE[5:4].
6
R
RO
Reserved. This bit must always be zero.
5:4
DMABBASE
RW
DMA channel B programmable base address, bits 5:4. These bits select a
channel number for this channel. In LAM DMABBASE[5:4] select the channel
number that this DMA represents, it should be different than
DMAABASE[5:4].
3:1
R
RO
Reserved. These bits must always be zeros.
0
DDMABEN
RW
DMA channel B enable. This DDMA channel is enabled when this bit is set to
a one.
Bit
Name
R/W
Function
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相關代理商/技術參數(shù) |
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|---|---|
| SAA7785 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ThunderBird Avenger PCI Audio Accelerator |
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| SAA7806H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:One chip automotive CD audio device |
| SAA7811HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Single-chip DVD-ROM |
| SAA7818HL | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:DVD and CD playback IC |
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