YMF744B ETC [List of Unclassifed Manufacturers], YMF744B Datasheet - Page 29

• Manufacturer Part Number: YMF744B
• Description: DS-1S
• Manufacturer: ETC [List of Unclassifed Manufacturers]

YMF744B
58-59h: ACPI Mode
5A-5Bh: DS-1S Secondary AC’97 Power Control
b0................ACPI: ACPI Mode Select
b0................SPR0: Secondary AC’97 Power Down Control 0
b1................SPR1: Secondary AC’97 Power Down Control 1
b2................SPR2: Secondary AC’97 Power Down Control 2
b3................SPR3: Secondary AC’97 Power Down Control 3
This bit select either PCI Bus Power Management or ACPI Mode for power management of DS-1S.
This bit controls the power state of the ADC and Input Mux in the Secondary AC’97.
This bit controls the power state of the DAC in the Secondary AC’97.
This bit controls the power state of the Analog Mixer (Vref still on) in the Secondary AC’97. This
power state retains the Reference Voltage of the AC’97.
This bit controls the power state of the Analog Mixer (Vref off) in the Secondary AC’97. This power
state removes Reference Voltage of the AC’97.
b15
b15
“0”: PCI Bus Power Management is used. CAP bit (06-07h: Status Register) and Capabilities Pointer
“1”: ACPI Mode is used. CAP bit and Capabilities Pointer are hardwired “0”, and disabled.
“0”: Normal
“1”: Power down
“0”: Normal
“1”: Power down
“0”: Normal
“1”: Power down
“0”: Normal
“1”: Power down
-
-
Read / Write
Default: 0000h
Access Bus Width: 8, 16, 32-bit
Read / Write
Default: 0000h
Access Bus Width: 8, 16, 32-bit
(34h) are enabled.
b14
b14
-
-
b13
b13
-
-
b12
b12
-
-
(default)
(default)
(default)
(default)
(default)
b11
b11
-
-
b10
b10
-
-
b9
b9
-
-
-29-
b8
b8
-
-
SPR7 SPR6 SPR5 SPR4 SPR3 SPR2 SPR1 SPR0
b7
b7
-
b6
b6
-
b5
b5
-
b4
b4
-
b3
b3
-
February 3, 1999
b2
b2
-
b1
b1
-
ACPI
b0
b0