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YMF744B Datasheet, PDF (25/60 Pages) List of Unclassifed Manufacturers – DS-1S | |||
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YMF744B
4E-4Fh: DS-1S Power Control 2
Read / Write
Default: 0000h
Access Bus Width: 8, 16, 32-bit
b15 b14 b13 b12 b11 b10 b9 b8
-
-
- PSHWV PSIO PSACL PSDIR PSDIT
b7 b6 b5 b4 b3 b2
PSZV PSSRC PSPCA PSJOY PSMPU PSSB
b1
PSFM
b0
CMCD
b0................CMCD: CODEC Master Clock Disable
Setting this bit to â1â disables the oscillation of the CMCLK. To stop a clock, when the CMCLK is
supplied to the ACâ97, it is required that b13:PR5 bit of 4A-4Bh register is set to â1â. (If the Secondary
ACâ97 is used, it is also necessary that b5:SPR5 bit of 5A-5Bh register is set to â1â.)
â0â: Normal
(default)
â1â: Disable
b1................PSFM: Power Save FM Synthesizer
Setting this bit to â1â stops a clock supplied to the FM synthesizer block.
â0â: Normal
(default)
â1â: Disable
b2................PSSB: Power Save Sound Blaster
Setting this bit to â1â stops a clock supplied to the Sound Blaster block.
â0â: Normal
(default)
â1â: Disable
b3................PSMPU: Power Save MPU401
Setting this bit to â1â stops a clock supplied to the MPU401 block.
â0â: Normal
(default)
â1â: Disable
b4................PSJOY: Power Save Joystick
Setting this bit to â1â disables the comparator of the Joystick block.
â0â: Normal
(default)
â1â: Disable
b5................PSPCA: Power Save PCI Audio
Setting this bit to â1â stops a clock supplied to the PCI Audio block.
â0â: Normal
(default)
â1â: Disable
b6................PSSRC: Power Save SRC
Setting this bit to â1â stops a clock supplied to the SRC block.
â0â: Normal
(default)
â1â: Disable
February 3, 1999
-25-
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