Datasheet > YMF740C

YMF740C

更新时间： 2024-01-25 12:34:59

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
44页	224K
描述
DS-1L

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YMF740C 技术参数

是否Rohs认证：	不符合	生命周期：	Contact Manufacturer
包装说明：	,	Reach Compliance Code：	unknown
风险等级：	5.92

YMF740C 数据手册

YMF740C

DS-1L

OVERVIEW

YMF740C (DS-1L) is a high performance audio controller for the PCI Bus. DS-1L 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 41 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 32-voice XG wavetable synthesizer with Reverb and variation. It also supports DirectSound hardware

accelerator, Downloadable Sound (DLS) and DirectMusic accelerator.

Legacy Audio block supports FM Synthesizer, Sound Blaster Pro, MPU401 UART mode and Joystick

function in order to provide hardware compatibility for numerous PC games on real DOS without any software

driver. To achieve legacy DMAC compatibility on the PCI, DS-1L supports PC/PCI protocols.

DS-1L supports the connection to AC’97 which provides high quality DAC, ADC and analog mixing.

FEATURES

• PCI 2.1 Compliant

• Legacy Audio compatibility

FM Synthesizer

• PC’97/PC’98 specification Compliant

• PCI Bus Power Management rev. 1.0 Compliant

(Support D0, D2 and D3 state)

Hardware Sound Blaster Pro compatibility

MPU401 UART mode MIDI interface

Joystick

• PCI Bus Master for PCI Audio

True Full Duplex Playback and Capture with

different Sampling Rate

• Supports AC’97 Interface (AC-Link)

• Hardware Volume Control

Maximum 32-voice XG capital Wavetable

Synthesizer including GM compatibility

DirectSound Hardware Acceleration

DirectMusic Hardware Acceleration

Downloadable Sound (DLS) level-1

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

emulation

• Single Crystal operation (24.576MHz)

• 5V Power supply for I/O. 3.3V Power supply for

Internal core logic

• 144-pin LQFP (YMF740C-V)

GENERAL MIDI logo is a trademark of Association of Musical Electronics Industry (AMEI),

and indicates GM system level 1 Compliant.

XG logo is a trademark of YAMAHA Corporation.

CORPORATION

YAMAHA

YMF740C CATALOG

CATALOG No.:LSI-4MF740C20

September 21, 1998

January 14, 1999

12 3 4 5 6 7...44

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