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參數資料
| 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： | 27/70頁 |
| 文件大小： | 348K |
| 代理商： | SAA7780 |
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ThunderBird Q3D PCI Audio
Accelerator
SAA7780
Philips Semiconductors
Product Specification
1999 Sep 30
27
The PCI datapath block contains the multiplexors and registers to steer the data to and from the PCI interfaces. The
data is de-multiplexed from the external PCI interface to the internal master and slave busses. Control logic from the
master and slave devices control the datapath.
The SAA7780 is considered a multi-function device since the operating system may wish to load different drivers for
certain functions. These functions are the audio subsystem, the joystick and the 16650 UART. Each of these major
functions must have a separate PCI configuration space. The standard PCI configuration header for these three
functions are supported in the PCI interface.
The SAA7780 PCI interface responds to and initiates PCI cycles with positive decoding according to the PCI 2.1
specification. The interface asserts DEVSEL# after the first clock following FRAME# making it a medium responder. For
specific LAM cycles, the SAA7780 will be a fast responder. The following table indicates which cycles the PCI interface
responds to or initiates.
PCI Bus Command Definitions and SAA7780 Responses
The SAA7780 will respond to byte, word, tri-byte or double word access for configuration read and configuration write
cycles provided PCI addressing rules are followed. Byte and word width accesses allowed for I/O cycles depend largely
on the target I/O device. In general, 24-bit and 32-bit accesses are not allowed to I/O devices and will result in a target
abort. The SAA7780 performs double word accesses when initiating master cycles. Note that the SAA7780 cannot
initiate a master cycle to itself. The next table summarizes the access rules for configuration and I/O cycles.
c/be#[3:0]
Command Type
SAA7780 Response to Cycle
0000
Interrupt Acknowledge
This cycle is not claimed.
0001
Special Cycle
This cycle is not claimed.
0010
I/O Read
All I/O Read cycles directed to the SAA7780 are claimed by the
target interface.
0011
I/O Write
All I/O Write cycles directed to the SAA7780 are claimed by the
target interface.
0100
Reserved
This cycle is not claimed.
0101
Reserved
This cycle is not claimed.
0110
Memory Read
This cycle is not claimed.
0111
Memory Write
This cycle is not claimed.
1000
Reserved
This cycle is not claimed.
1001
Reserved
This cycle is not claimed.
1010
Configuration Read
All Configuration Read cycles are claimed by the target interface
provided IDSEL is sampled asserted during the address/cmd
phase.
1011
Configuration Write
All Configuration Write cycles are claimed by the target interface
provided IDSEL is sampled asserted during the address/cmd
phase.
1100
Memory Read Multiple
This cycle is not claimed.
1101
Dual Address Cycle
The SAA7780 supports 32-bit addresses only.
1110
Memory Read Line
This cycle is not claimed.
1111
Memory Write and Invalidate
This cycle is not claimed.
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相關代理商/技術參數 |
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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 |
| SAA7806 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:One chip automotive CD audio device |
| 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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