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): 18/70頁
文件大?。?/td> 348K
代理商: SAA7780
ThunderBird Q3D PCI Audio
Accelerator
SAA7780
Philips Semiconductors
Product Specification
1999 Sep 30
18
GNT#
37
I-T
PCI Bus Grant
An asserted GNT# pin indicates that the PCI master arbiter has
granted bus ownership to the SAA7780 chip.
IRQSER
32
IO-OD
PCI Bus Serial Interrupts
This pin is used to output the serial interrupt stream for legacy
interrupts. It is used only if the SAA7780 is used in a Common
Architecture system. Otherwise it is tri-stated.
INTA#
31
IO-OD
PCI Bus Interrupt A
The interrupt output is a PCI compatible active low level sensitive
interrupt. It is only used if the SAA7780 is used in a non Common
Architecture system. Otherwise it is tri-stated. It is driven low when
any of the internal interrupts are asserted.
PERR#
72
IO-STS
PCI Bus Parity Error
This signal indicates a data parity error for any cycle type other than
a Special Cycle command. PERR# is made active two clocks after
the completion of the data phase which caused the parity error. This
error signal may result in the generation of a non-maskable interrupt
(NMI) or other high priority interrupt sent to the CPU.
SERR#
73
IO-OD
PCI Bus System Error
This signal indicates an address parity error, data parity errors on
Special Cycle commands or any other catastrophic system error.
SERR# is an open-drain bidirectional pin which is driven low for a
single PCLK cycle by the agent reporting the error. This error may
result in the generation of a non-maskable interrupt (NMI) or other
high priority interrupt sent to the CPU.
IDSEL
51
I-T
Initialization Device Select
IDSEL is used as a chip select during configuration register read
and write operations. One system board address line from
AD[31:11] is used as IDSEL to select the SAA7780 configuration
space in the SAA7780 chip when used on the PCI bus.
CLKRUN#
100
O-OD
PCI Bus Clock Run Request
The SAA7780 uses CLKRUN# according to the Mobile PCI protocol
to start the PCI clock or keep the clock running whenever an internal
PCI device requires it.
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