Yamaha YMF724F specifications 51h Next Item Pointer, 52-53h Power Management Capabilities

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YMF724F

51h: Next Item Pointer

Read Only

Default: 00h

Access Bus Width: 8, 16, 32-bit

b7

b6

b5

b4

b3

b2

b1

b0

Next Item Pointer

b[7:0] ..........Next Item Pointer

DS-1 does not provide other new capability besides Power Management. This register is hardwired to

00h.

52-53h: Power Management Capabilities

Read Only

Default: 0401h

Access Bus Width: 8, 16, 32-bit

b15

b14

b13

b12

b11

b10

b9

b8

b7

b6

b5

b4

b3

b2

b1

b0

-

-

-

-

-

D2S

D1S

-

-

-

-

-

-

Version

b[2:0]

Version

These bits contain the revision number of the Power Management Interface Specification. They are hardwired to 001b.

b9	D1S: D1 Support

This bit indicates whether DS-1 support “D1” of the power state. Only when EEPROM connects externally, this bit can be set to “1”, and D1 state can support. When EEPROM does not connect externally, use ACPI mode (58-59h: ACPI Mode Register, ACPI bit) to support D1 state.

The default value is “0”.

b10	D2S: D2 Support

This bit indicates that DS-1 support “D2” of the power state. It is hardwired to “1”.

September 21, 1998

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Contents Overview FeaturesGM system level LogosSensaura YMF724F-V PIN ConfigurationPCI Bus Interface 53-pin PIN DescriptionYMF730AC-2 Interface 6-pin Spdif Interface 1-pin YMF727AC3F2 Interface 9-pinLegacy Device Interface 16-pin Miscellaneous 15-pin Power Supply 39-pinOPL3 Block DiagramDOS VM System DiagramFunction Overview PCI Bus CommandPCI Configuration Register 00 01h Vendor ID 04 05h Command02 03h Device ID 06 07h Status 09h Programming Interface 08h Revision ID0Ah Sub-class Code 0Bh Base Class Code0Eh Header Type 0Dh Latency Timer10 13h PCI Audio Memory Base Address 2E-2Fh Subsystem ID 2C-2Dh Subsystem Vendor ID34h Capability Register Pointer 3Dh Interrupt Pin 3Ch Interrupt Line3Eh Minimum Grant 3Fh Maximum Latency40 41h Legacy Audio Control B108 ........SBIRQ Sound Blaster IRQ Channel Select B76 ..........SDMA Sound Blaster DMA-8 Channel SelectB1311 ......MPUIRQ MPU401 IRQ Channel Select 42 43h Extended Legacy Audio Control B15..............IMOD Legacy IRQ mode B1211 ......SMOD SB DMA mode44-45h Subsystem Vendor ID Write Register B1413 ......SBVER SB Version Select46-47h Subsystem ID Write Register 4A-4Bh DS-1 Power Control Register48-49h DS-1 Control Register PSL0 Power Save Legacy Audio Block DPLL1 Disable PLL1 Clock OscillationPSL1 Power Save Legacy Audio Block PSN Power Save PCI Audio blockB13..............PR5 AC-2 Power down Control B12..............PR4 AC-2 Power down ControlB1514 ......AC-2 Power down Control 6 50h Capability ID 4C-4Dh D-DMA Slave Configuration51h Next Item Pointer 52-53h Power Management Capabilities58-59h Acpi Mode 54-55h Power Management Control / StatusB10 ..........PS Power State B0................ACPI Acpi Mode SelectOPL3 ISA Compatible DevicePCI OPL3 Status Register RO OPL3 BlockOPL3 Data Register Array 1 R/W OPL3 Data Register Array 0 R/WSound Blaster Pro Block CMD Sound Blaster Pro Mixer SB Mixer AC-2 SE Scan Enable B0................SBPDR Sound Blaster Power Down RequestSM Scan Mode Sbpda Sound Blaster Power Down AcknowledgementF8h Interrupt Flag Register F1h Scan In/ Out DataB70 ..........SCAN Data B0................SBI SB Interrupt FlagJoystick MPU401PC/PCI DMA Emulation ProtocolDMA Digital Audio Interface Interrupt RoutingSerialized IRQ Hardware Volume Control Absolute Maximum Ratings Electrical CharacteristicsDC Characteristics Master Clock ResetPoint to Point Input Hold Time for Pciclk PCI InterfaceAC-link AC-2 / AC3F2 Master ClockInput Hold Time for Abclk AC3F2 InterfaceAC3F2 Control Interface timing OFF External DimensionsYamaha Corporation