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): 30/70頁
文件大小: 348K
代理商: SAA7780
ThunderBird Q3D PCI Audio
Accelerator
SAA7780
Philips Semiconductors
Product Specification
1999 Sep 30
30
FIGURE 5
In each of the three SAA7780 functions PCI configuration space there is a Subsystem Vendor ID register at an offset of
2Ch and a Subsystem ID register at an offset of 2Eh. Each register is 16 bits in length and is write-only by the serial
EEPROM and read-only from the PCI interface. The data from the EEPROM is loaded into the registers immediately
after PCI reset. If no EEPROM is detected, the default values are loaded as shown and reflect the default values for the
System ID and Vendor ID for that function.
Subsystem Register Default Values
The EEPROM contains bits 000h through 3FFh. Only bits 000h through 05Fh are utilized to program the Subsystem ID
and Subsystem Vendor ID registers. The bit assignments between the EEPROM and the configuration registers are
shown below.
EEPROM BIT Assignments to Subsystem Registers
Function
Device Type
Offset
Register Name
Default Value
0
Audio Subsystem
2Ch
Subsystem Vendor ID
1004h
0
Audio Subsystem
2Eh
Subsystem ID
0304h
1
Joystick
2Ch
Subsystem Vendor ID
1004h
1
Joystick
2Eh
Subsystem ID
0305h
2
16650 UART
2Ch
Subsystem Vendor ID
1004h
2
16650 UART
2Eh
Subsystem ID
0306h
Function 0 - Audio Subsystem
Function 1 - Joystick
Function 2 - 16650 Modem UART
Subsystem
Vendor ID - Offset
2Ch
Subsystem ID -
Offset 2Eh
Subsystem
Vendor ID - Offset
2Ch
Subsystem ID -
Offset 2Eh
Subsystem
Vendor ID - Offset
2Ch
Subsystem ID -
Offset 2Eh
EEPROM
Bit #
Reg
Bit #
EEPROM
Bit #
Reg
Bit #
EEPROM
Bit #
Reg
Bit #
EEPROM
Bit #
Reg
Bit #
EEPROM
Bit #
Reg
Bit #
EEPROM
Bit #
Reg
Bit #
000h
15
010h
15
020h
15
030h
15
040h
15
050h
15
001h
14
011h
14
021h
14
031h
14
041h
14
051h
14
002h
13
012h
13
022h
13
032h
13
042h
13
052h
13
ThunderBird
EEPROM
CFGDAT
CFGCLK
SDA
SCL
WP
+5V
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