參數(shù)資料
型號: 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): 37/70頁
文件大?。?/td> 348K
代理商: SAA7780
ThunderBird Q3D PCI Audio
Accelerator
SAA7780
Philips Semiconductors
Product Specification
1999 Sep 30
37
Master Latency Timer Register - Latime (RW)
Header Type Register - Header (RO)
BIST Register - BIST (RO)
Bit
Name
R/W
Function
7:0
CACHELINE
RO
Reserved for cache line size indicator.
PCI CFG 0
D7
D6
D5
D4
D3
D2
D1
D0
Offset 0Dh
LATIME[7:0]
POR Value
0
0
0
0
0
0
0
0
Bit
Name
R/W
Function
7:0
LATIME
RW
The primary bus latency timer specifies the number of primary clocks that the
primary master may consume. The timer is reloaded at each assertion of
FRAME# by the primary master. If the primary master loses its bus grant,
then it must relinquish the bus after the timer expires.
PCI CFG 0
D7
D6
D5
D4
D3
D2
D1
D0
Offset 0Eh
MULTI_
FN
HEADER[6:0]
POR Value
1
0
0
0
0
0
0
0
Bit
Name
R/W
Function
7
MULTI_FN
RO
A 1 indicates that the SAA7780 is a multi-function device. The three PCI
configuration headers are accessed by the configuration cycle address bits
10-8. The function definitions are as follows:
0 = Audio Subsystem
1 = Joystick
2 = 16650 UART
6:0
HEADER
RO
Header Type. A 00h indicates this device is a not a PCI-to-PCI bridge.
PCI CFG 0
D7
D6
D5
D4
D3
D2
D1
D0
Offset 0Fh
BIST
START
R
R
CODE[3:0]
POR Value
0
0
0
0
0
0
0
0
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