Yamaha YMF724F specifications Sound Blaster Pro Mixer

Page 33

YMF724F

2-2-2. Sound Blaster Pro Mixer

The following shows the register map of the Mixer section of Sound Blaster Pro.

Address

b7

b6

b5

b4

b3

b2

b1

b0

Remark

00h

Reset

04h

Voice Volume L

"1"

Voice Volume R

"1"

0Ah

-

-

-

"1"

-

MIC Volume*

0Ch

-

-

Ifilter*

"1"

Input Source*

"1"

0Eh

-

-

Ofilter*

"1"

-

-

St. SW

"1"

SB Pro Mixer

22h

Master Volume L

"1"

Master Volume R

"1"

26h

MIDI Volume L

"1"

MIDI Volume R

"1"

28h

CD Volume L*

"1"

CD Volume R*

"1"

2Eh

Line Volume L*

"1"

Line Volume R*

"1"

F0h

SBPDA

-

-

-

SS

SM

SE

SBPDR

Suspend / Resume

F1h

SCAN

DATA

F8h

-

-

-

-

-

-

-

SBI

IRQ Status

The registers marked with * exist, but do not function.

DS-1 does not have the circuit that corresponds to the SB Mixer. Therefore, the volume settings on the SB Mixer are converted to the DSP coefficients of DS-1 or to AC-2 register values.

The conversion for each case is described below.

(1) SB Mixer ® DSP

The volume of master, MIDI and Voice, are applied to this case.

When the SB register is set, a 14-bit coefficient value is determined from the following conversion table and used as the DSP coefficient. The attenuation value of Master Volume, MIDI, and voice are summed together to obtain the coefficient.

These volumes cannot be controlled from PCI Audio block.

September 21, 1998

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Contents Overview FeaturesLogos GM system levelSensaura YMF724F-V PIN ConfigurationPIN Description PCI Bus Interface 53-pinYMF730AC-2 Interface 6-pin YMF727AC3F2 Interface 9-pin Spdif Interface 1-pinLegacy Device Interface 16-pin Miscellaneous 15-pin Power Supply 39-pinOPL3 Block DiagramDOS VM System DiagramFunction Overview PCI Bus CommandPCI Configuration Register 04 05h Command 00 01h Vendor ID02 03h Device ID 06 07h Status 09h Programming Interface 08h Revision ID0Ah Sub-class Code 0Bh Base Class Code0Dh Latency Timer 0Eh Header Type10 13h PCI Audio Memory Base Address 2C-2Dh Subsystem Vendor ID 2E-2Fh Subsystem ID34h Capability Register Pointer 3Dh Interrupt Pin 3Ch Interrupt Line3Eh Minimum Grant 3Fh Maximum Latency40 41h Legacy Audio Control B76 ..........SDMA Sound Blaster DMA-8 Channel Select B108 ........SBIRQ Sound Blaster IRQ 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 Select4A-4Bh DS-1 Power Control Register 46-47h Subsystem ID Write 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 blockB12..............PR4 AC-2 Power down Control B13..............PR5 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 Interrupt Routing Digital Audio InterfaceSerialized 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