YMF744B

Features: • PCI 2.2 Compliant• PC'98/PC'99 specification Compliant• PCI Bus Power Management rev. 1.0 Compliant (Support D0, D2 and D3 state)• Supports clock run• PCI Bus Master for PCI Audio True Full Duplex Playback and Capture with different Sampling Rate Maximum 6...

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SeekIC No. : 004549989 Detail

YMF744B: Features: • PCI 2.2 Compliant• PC'98/PC'99 specification Compliant• PCI Bus Power Management rev. 1.0 Compliant (Support D0, D2 and D3 state)• Supports clock run• PCI B...

floor Price/Ceiling Price

Part Number:
YMF744B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/13

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Product Details

Description



Features:

• PCI 2.2 Compliant
• PC'98/PC'99 specification Compliant
• PCI Bus Power Management rev. 1.0 Compliant (Support D0, D2 and D3 state)
• Supports clock run
• 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 Serialized IRQ
• Supports PC/PCI and Distributed DMA for legacy
  DMAC (8237) emulation
• Supports I2S serial input for Zoomed Video Port
• Supports Consumer IEC958 Output (SPDIF OUT)
• Supports Consumer IEC958 Input (SPDIF IN)
• Supports AC'97 Interface (AC-Link) Revision 2.1
• AC'97 Digital Docking
• Supports 4-Channel Speaker
• Hardware Volume Control
• EEPROM Interface
• Single Crystal operation (24.576MHz)
• 3.3V Power supply (5V tolerant)
• 128-pin LQFP YMF744B-V : 0.5mm pin pitch
  YMF744B-R : 0.4mm pin pitch



Pinout

  Connection Diagram


Specifications

Item Symbol Min. Max. Unit
Power Supply Voltage
(PVDD, VDD, CVDD, LVDD)
VDD3 -0.3 4.6 V
Input Voltage VIN -0.3 7.0 V
Operating Ambient Temperature TOP 0 70 °C
Storage Temperature TSTG -50 125 °C

Note : PVSS=VSS=0[V]




Description

YMF744B (DS-1S) is a high performance audio controller for the PCI Bus. DS-1S 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.

YMF744B 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-1S supports both PC/PCI and Distributed DMA protocols. DS-1S also supports Serialized IRQ for legacy IRQ compatibility.

DS-1S supports the connection to AC'97 which provides high quality DAC, ADC and analog mixing, and it can connect two AC'97s. In addition, it supports consumer IEC958, Audio Digital Interface (SPDIF), to connect external audio equipment by digital.




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