YMF754-V ETC, YMF754-V Datasheet - Page 10

• Manufacturer Part Number: YMF754-V
• Description: DS-1E
• Manufacturer: ETC

YMF754
1-2. PCI Configuration Register
In addition to the Configuration Register defined by PCI Revision 2.2, DS-1E provides proprietary PCI
Configuration Registers in order to control legacy audio function, such as FM Synthesizer, Sound Blaster Pro,
MPU401 and Joystick. These additional registers are configured by BIOS or the configuration software
from YAMAHA Corporation.
The following shows the overview of the PCI Configuration Register.
Reserved registers are hardwired to “0”. All data written to these registers are discarded. The values
read from these registers are all zero.
DS-1E can be accessed by using any bus width, 8-bit, 16-bit or 32-bit.
0C-0Fh
1C-2Bh
2C-2Fh
3C-3Fh
4C-4Fh
5C-5Fh
08-0Bh
18-1Bh
38-3Bh
48-4Bh
58-5Bh
68-FFh
00-03h
04-07h
10-13h
14-17h
30-33h
34-37h
40-43h
44-47h
50-53h
54-57h
60-63h
64-67h
Offset
Maximum Latency
Base Class Code
DS-1E Secondary AC’97 Power Control
Power Management Capabilities
Reserved
Extended Legacy Audio Control
b[31..24]
Sound Blaster Base Address
Legacy Audio I/O Base Address (Dummy for SB, FM, MPU, D-DMA)
DS-1E Power Control 1
DS-1E Power Control 2
Joystick Base Address
Subsystem ID Write
Subsystem ID
Device ID
Reserved
Legacy Audio I/O Base Address (Dummy for Joystick)
Status
Sub Class Code
Minimum Grant
Header Type
PCI Audio Memory Base Address
Reserved
b[23..16]
-10-
Reserved
Reserved
Reserved
Reserved
Reserved
Next Item Pointer
Programming IF
Latency Timer
Power Management Control / Status
Interrupt Pin
FM Synthesizer Base Address
b[15..8]
Subsystem Vendor ID Write
D-DMA Slave Configuration
MPU401 Base Address
Subsystem Vendor ID
Legacy Audio Control
DS-1E Control
ACPI Mode
Command
Vendor ID
Interrupt Line
Capability ID
Cap Pointer
Revision ID
Reserved
b[7..0]
June 28, 1999