DS-1L. YMF740C Datasheet
|Total Page||30 Pages|
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.
• 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 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)
• Legacy Audio compatibility
Hardware Sound Blaster Pro compatibility
MPU401 UART mode MIDI interface
• Supports AC’97 Interface (AC-Link)
• Hardware Volume Control
• 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.
144 Pin LQFP Top View
January 14, 1999
|Features||Datasheet pdf YMF740C DS-1L OVERVIEW YMF740C (DS-1L) i s a high performance audio controller f or the PCI Bus. DS-1L consists of two s eparated functional blocks. One is the PCI Audio block and the other is the Le gacy Audio block. PCI Audio block allow s Software Driver to handle maximum of 41 concurrent audio streams with the Bu s Master DMA engine. The PCI Audio Engi ne converts the sampling rate of each a udio stream and the streams are mixed w ithout utilizing the CPU or causing sys tem latency. By using the Software Driv er from YAMAHA, PCI Audio provides 32-v oice XG wavetable synthesizer with Reve rb and variation. It also supports Dire ctSound hardware accelerator, Downloada ble Sound (DLS) and DirectMusic acceler ator. Legacy Audio block supports FM Sy nthesizer, Sound Blaster Pro, MPU401 UA RT mode and Joystick function in order to provide hardware compatibility for n umerous PC games on real DOS without an y software driver. To achieve legacy DM AC compatibility on the PCI, DS-1L supports PC/PCI protocols. D.|
|Keywords||YMF740C, datasheet, pdf, ETC, DS-1L, MF740C, F740C, 740C, YMF740, YMF74, YMF7, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute|