音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

LM4560VJD Datasheet

  • LM4560VJD

  • Advanced PCI Audio Accelerator

  • 383.12KB

  • 54頁

  • NSC

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

LM4560 Advanced PCI Audio Accelerator
December 1998
LM4560
Advanced PCI Audio Accelerator
General Description
LM4560 is an advanced PCI audio accelerator providing full
legacy compatibility, wavetable synthesis, DirectMusic, Di-
rectSound, and DirectSound3D on a single chip for the high-
performance, cost-sensitive consumer market. It supports
Sound Blaster functionality and is fully PC98 compliant.
The LM4560 integrates a 64-voice wave table engine with
per voice effect processing capability. It supports the upcom-
ing Microsoft
鈩?/div>
DirectMusic API and is fully compatible with
DLS Level 1 (downloadable samples) specification. The
LM4560 is optimized for Microsoft Windows
鈩?/div>
98 and Win-
dows NT5.0 WDM streaming architecture with re-routable
end-point support. The LM4560 includes DirectSound3D ac-
celeration hardware for ITD (Interaural Time Difference), IID
(Interaural Intensity Difference), Pan, Delay, and Doppler
hardware.
The LM4560 supports Sound Blaster Pro/16 DOS games
while improving gaming audio quality. The LM4560 supports
both the legacy analog gameport and a Digital Enhanced
Game Port. When coupled with DirectInput
鈩?/div>
driver, the Digi-
tal Enhanced Game Port can save up to 12% of the CPU
overhead nominally required by a conventional analog game
port. The LM4560 employs a high precision 26-bit digital
mixer, providing an accurate 20-bit output and higher than 90
dB signal-to-noise ratio when used with high quality AC97
Rev 1.03 and Rev 2.0 codecs.
The LM4560 is designed with aggressive power manage-
ment. It is PCI Bus Power Management Interface (PPMI
1.0)-compliant. The LM4560 supports multiple Rev 2.0 AC97
codecs, which are useful for notebook docking systems.
With a low power, 3.3V process and a space conscious 100
TQFP package, the LM4560 is also well suited for Notebook
systems.
In summary, the LM4560 provides a balanced combination
of features and performance to the end-user. By combining
PCI bus mastering for DirectSound acceleration, Hardware
Wave table synthesizer, Digital Enhanced Game Port and
DirectSound 3D audio acceleration. It delivers high perfor-
mance, high quality audio, high-end features with efficient
power management in a space-efficient 100 TQFP package.
Advanced Wavetable Synthesizer
n
Wavetable synthesis with 64-voices polyphony, which
supports all combinations of stereo/mono, 8-/16-bits,
and signed/unsigned samples
n
Per channel volume, pitch shift, left/right pan, tremolo,
vibrato and envelope control (32 channels in hardware)
n
Per channel effect process ing and effect volume control
for reverb, chorus, and echo
n
DLS1-compliant Downloadable Samples support
Legacy Compatibility
n
Legacy game audio support with SoundBlaster Pro/16
compatibility on the PCI bus
n
Legacy DMA support on PCI Bus with DDMA-enabled or
standard (non-DDMA) PCI chipsets
n
FM through realtime FM-to-wavetable conversion
n
MPU-401 compatible UART for external or internal
synthesis
n
General MIDI/GS command interpretation for wavetable
& effect synthesis
High Quality Audio and AC97 Support
n
CD quality audio with higher than 90 dB signal-to-noise
ratio using an external high quality AC97 codec
n
AC97 support with full duplex, independent sample rate
converter for audio recording and playback
n
On-chip sample rate converter ensures all internal
operation at 48 kHz
n
High precision internal 26-bit digital mixer with 16- and
20-bit digital audio output
Advanced Streaming Architecture
n
Microsoft WDM Streaming architecture compliant and
鈥淩e-routable endpoint鈥?support
n
Three stereo capture channels
n
AC97 stereo recording channel through AC-link
DirectSound 3D
n
64-voices DirectSound channels
n
32-voices DirectSound3D accelerator with IID, ITD, and
Doppler effects on 3D positional audio buffers
n
DirectSound accelerator for volume, pan, and pitch shift
control on streaming or static buffers
Telephony & Modem
n
Full duplex speaker phone with AC97 2.0 audio-modem
codec
n
Fax-modem with host based software
Extras
n
Fully Plug and Play PCI controller and software
n
Digital Enhanced Game port enables an analog joystick
to emulate digital joystick performance using the
National Semiconductor-provided DirectInput driver. This
eliminates up to 12% CPU overhead wasted on joystick
polling.
Features
n
PCI 2.1-compliant with Bus Mastering optimized for
multiple stream operation
n
On-chip per voice cache minimizes PCI bandwidth
n
Up to 20X improvement over ISA DMA on PCI bus
bandwidth utilization
TRI-STATE
廬
is a registered trademark of National Semiconductor Corporation.
Microsoft
鈩?/div>
is a trademark of Microsoft Corporation.
Windows
廬
is a registered trademark of Microsoft Corporation.
DirectInput
鈩?/div>
is a trademark of Microsoft Corporation
漏 1998 National Semiconductor Corporation
DS100910
www.national.com

LM4560VJD相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    ETC
  • 英文版
    SOT-23 Precision Centigrade Temperature Sensor
    NATIONAL
  • 英文版
    SOT-23 Precision Centigrade Temperature Sensors
    NSC
  • 英文版
    SOT-23 Precision Centigrade Temperature Sensors
  • 英文版
    SOT-23 Precision Centigrade Temperature Sensors
    NSC
  • 英文版
    SOT-23 Precision Centigrade Temperature Sensors
  • 英文版
    Synchronous Step-Up DC/DC Converter with True Shutdown Isola...
    NATIONAL SEMICONDUCTOR
  • 英文版
    AC ’97 Codec with National 3D Sound
    NSC
  • 英文版
    AC ’97 Codec with National 3D Sound
  • 英文版
    AC ’97 Codec with National 3D Sound
    NSC
  • 英文版
    AC ’97 Codec with National 3D Sound
  • 英文版
    AC ’97 Codec with Stereo Headphone Amplifier and National 3...
    NSC
  • 英文版
    AC ’97 Codec with Stereo Headphone Amplifier and National 3...
  • 英文版
    AC ’97 Rev 2 Codec with Sample Rate Conversion and National...
    NSC
  • 英文版
    AC ’97 Rev 2 Codec with Sample Rate Conversion and National...
  • 英文版
    AC ’97 Rev 2 Codec with National 3D Sound
  • 英文版
    AC ’97 Rev 2 Codec with Sample Rate Conversion and National...
    NSC
  • 英文版
    AC ’97 Rev 2 Codec with Sample Rate Conversion and National...
  • 英文版
    AC ’97 Rev 2.1 Codec with Sample Rate Conversion and Nation...
    NSC
  • 英文版
    AC ’97 Rev 2.1 Codec with Sample Rate Conversion and Nation...

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動(dòng)力！意見一經(jīng)采納，將有感恩紅包奉上哦！