YMF715E

6. DAC interface

OPL3-SA3 supports two types of DAC interface format. One is the conventional DAC interface format (very common for the consumer audio product) for OPL4-ML/ML2. Another is the I2S format for Zoomed Video port. These two types of the formats are shown in the following Fig.6-1, 2.

BCLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIN

1

0

15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

0

15 14 13 12 11 10

9

8

7

6

5

4

3

2

1

0

 

 

 

Left Channel

 

 

 

 

 

 

 

Right Channel

 

 

 

 

 

 

LRCK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig.6-1 Conventional DAC Interface Format for OPL4-ML/ML2

BCLK

SIN

 

15

14

13

12

11

10

9

8

7

 

6

5

4

3

2

1

0

 

 

 

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

Left Channel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Right Channel

 

 

 

 

 

 

 

LRCK

Fig.6-2 I2S Format for Zoomed Video Port

7. 3D Enhanced Control

OPL3-SA3 integrates the 3D enhanced controller including all the analog components in conventional systems. Wide, bass, and treble controls are available via SA3 control register, index 14h, 15h, 16h. One of the four 3D Enhancement modes can be selected according to the frequency response of the speaker. These are controlled by SA3 control register, index 02h D5, D4 bit (YMODE1-0).

YMODE1

YMODE0

3D Enhancement mode

Target speaker

Speaker size

 

 

 

 

 

0

0

Desktop mode

Standard speaker

5 ~ 12cm

0

1

Notebook PC mode (1)

Small speaker

3cm

1

0

Notebook PC mode (2)

Smaller speaker

1.5cm

1

1

Hi-Fi mode

Hi-Fi speaker

16 ~ 38cm

Following diagram(Fig.7-1) shows the 3D enhanced controller sub-system.

MIC,LINER,

AUX1R,AUX2R,

MIN,SBR,WSS{PBR

Yamaha

3D Enhanced

Controller

(analog components)

{ MIC,LINEL,

AUX1L,AUX2L,

MIN,SBL,WSS_PBL

Rch

 

 

 

 

to Hardware

Lch

Volume Control

}

 

 

 

 

Fig.7-1 3D Enhanced Control Block Diagram

May 21, 1997

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Page 21
Image 21
Yamaha OPL3-SA3 specifications DAC interface, 3D Enhanced Control, YMODE1 YMODE0

OPL3-SA3 specifications

The Yamaha OPL3-SA3 is a highly regarded sound card known for its exceptional audio performance and versatility, capturing the interest of enthusiasts and professionals in the digital audio realm. As an advanced version of the popular OPL3 series, the OPL3-SA3 integrates cutting-edge technologies that enhance its sound generation capabilities, making it a sought-after component for both music production and gaming applications.

One of the key features of the Yamaha OPL3-SA3 is its use of the FM synthesis technology, which allows for the generation of rich, complex sounds that are particularly favored in electronic and video game music. The OPL3 architecture supports up to 18 channels of audio output, enabling the simultaneous playback of multiple sounds without compromising quality. This multichannel capability enhances its use in audio applications, where layering various sound elements is crucial.

In addition to its synthesis features, the OPL3-SA3 also incorporates advanced MIDI capabilities, allowing musicians to connect and control external MIDI devices seamlessly. The integration of General MIDI support expands its usability in various music production setups. This makes the OPL3-SA3 a versatile option for composers and sound designers looking to create intricate soundscapes or realistic instrument simulations.

The audio quality of the OPL3-SA3 is further complemented by its 16-bit resolution and a sampling rate of up to 44.1 kHz, delivering clear and dynamic audio playback. This high level of fidelity is essential for generating lifelike sounds, making it suitable for both professional recordings and high-quality gaming experiences.

Another notable characteristic of the OPL3-SA3 is its compatibility with a wide range of operating systems, including DOS and Windows platforms, enhancing its accessibility for users of different systems. The card's drivers are designed for simplicity and reliability, ensuring that it can be easily integrated into existing audio setups.

With its combination of FM synthesis, MIDI capabilities, multichannel support, and high-fidelity audio performance, the Yamaha OPL3-SA3 stands out as a powerful tool for sound generation. Whether utilized by musicians, audio engineers, or game developers, the OPL3-SA3 continues to be a valuable asset in the evolving landscape of digital audio. Its legacy in the realm of sound cards remains influential, showcasing Yamaha's commitment to innovation and quality in the field of audio technology.