參數(shù)資料
型號(hào)： SAA7780
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)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)： 54/70頁
文件大小： 348K
代理商： SAA7780
ThunderBird Q3D PCI Audio
Accelerator
SAA7780
Philips Semiconductors
Product Specification
1999 Sep 30
54
Interrupt PIN Register - INTPIN (RO)
MIN_GNT Register - MINGNT (RO)
MAX_LAT Register - MAXLAT (RO)
Bit
Name
R/W
Function
7:0
INTLINE
RO
Interrupt Line. The Interrupt Line register is an eight bit register used to
communicate interrupt line routing information. The value in this register tells
which input of the system interrupt controller(s) the SAA7780 Device's
interrupt pin is connected to. It is set to 00h to use function 0’s interrupt line.
There is no legacy interrupt support for function 1.
PCI CFG 1
D7
D6
D5
D4
D3
D2
D1
D0
Offset 3Dh
INTPIN[7:0]
POR Value
0
0
0
0
0
0
0
0
Bit
Name
R/W
Function
7:0
INTPIN
RO
Interrupt Pin. The interrupt pin register tells which interrupt the SAA7780
device uses. The read only value of 00h implies that the SAA7780 device
shares the INT A interrupt pin with function 0. There is no legacy interrupt
support for function 1.
PCI CFG 1
D7
D6
D5
D4
D3
D2
D1
D0
Offset 3Eh
MINGNT[7:0]
POR Value
0
0
0
0
0
0
0
0
Bit
Name
R/W
Function
7:0
MINGNT
RO
Minimum grant specifies how long of a burst period the device needs
assuming a clock speed of 33MHz. Since the SAA7780, function 1, is a
target only, this register is read only and set to zero.
PCI CFG 1
D7
D6
D5
D4
D3
D2
D1
D0
Offset 3Fh
MAXLAT[7:0]
POR Value
0
0
0
0
0
0
0
0
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