OVERVIEW

YMF724F (DS-1) is a high performance audio controller for the PCI Bus. DS-1 consists of two separated functional blocks. One is the PCI Audio block and the other is the Legacy Audio block. PCI Audio block allows Software Driver to handle maximum of 73 concurrent audio streams with the Bus Master DMA engine. The PCI Audio Engine converts the sampling rate of each audio stream and the streams are mixed without utilizing the CPU or causing system latency. By using the Software Driver from YAMAHA, PCI Audio provides 64-voice XG wavetable synthesizer with Reverb and variation. It also supports DirectSound hardware accelerator, Downloadable Sound (DLS) and DirectMusic accelerator.

FEATURES

• PCI 2.1 Compliant

• PC’97/PC’98 specification Compliant

• PCI Bus Power Management rev. 1.0 Compliant (Support D0, D2 and D3 state)

• PCI Bus Master for PCI Audio

   True Full Duplex Playback and Capture with

   different Sampling Rate

   Maximum 64-voice XG capital Wavetable

   Synthesizer including GM compatibility

   DirectSound Hardware Acceleration

   DirectMusic Hardware Acceleration

   Downloadable Sound (DLS) level-1

• Legacy Audio compatibility

   FM Synthesizer

   Hardware Sound Blaster Pro compatibility

   MPU401 UART mode MIDI interface

   Joystick

• Supports PC/PCI and Distributed DMA for legacy DMAC (8237) emulation

• Supports Serialized IRQ

• Supports YAMAHA AC-3 device (YMF727 : AC3F2) interface to enable AC-3 decode

• Supports Consumer IEC958 Output (SPDIF) port

• Supports AC’97 Interface (AC-Link)

• Hardware Volume Control

• EEPROM Interface

• Single Crystal operation (24.576MHz)

• 5V Power supply for I/O. 3.3V Power supply for Internal core logic

• 144-pin LQFP (YMF724F-V)