Synthesizer LSI. YMF721 Datasheet

YMF721 Datasheet PDF, Equivalent


Part Number

YMF721

Description

FM + Wavetable Synthesizer LSI

Manufacture

LSI Computer Systems

Total Page 30 Pages
PDF Download
Download YMF721 Datasheet


YMF721 Datasheet
YMF721
OPL4-ML2
FM + Wavetable Synthesizer LSI
OVERVIEW
YMF721 (OPL4-ML2) is a high quality and low cost Wavetable synthesizer LSI. YMF721 (OPL4-ML2)
integrates an OPL3 (FM synthesizer), General MIDI processor and 1 Mbyte Wavetable sample ROM into one
chip, and complies with General MIDI (GM) system level 1. Thus, it is best suited to multimedia applications,
sound cards, MIDI synthesis modules and other sound applications.
Since this LSI outputs stereophonic 16 bit digital signal (fs = 44.1 kHz), it can be connected directly with
YMF701B, 711 or 715 (OPL3-SA, SA2 or SA3) or with YAC516(DAC16-L).
Operating voltage, 3.3 V, allows this LSI to be controlled with notebook personal computers.
Power management functions (power down and suspend/resume functions) of OPL4-ML2 contribute to low
power consumption of personal computers into which this product is built-in.
FEATURES
• The Wavetable synthesizer of this LSI is able to generate up to 24 types of sounds simultaneously.
• Has an interface that makes this LSI compatible with MPU-401 UART mode.
• Has an OPL3 (FM synthesizer) for AdLib/Sound Blaster applications.
• Has a 1 Mbyte built-in Wavetable sample ROM.
• Complies with GM system Level 1. (Thus, it is compatible with DOS applications that support MPU-401.)
• MIDI signal can be transmitted either through serial input or parallel input.
• FM synthesizer and Wavetable synthesizer of this LSI can generate their sound at the same time.
• FM synthesizer is register-compatible with OPL3.
• All registers are readable.
• Power management functions included power down and suspend/resume can be supported.
• Frequency of master clock signal is 33.8688 MHz.
• Pin compatible with YMF704C-S (100 pin SQPF)
• Voltage of power supply can be 5.0 V or 3.3 V.
• Silicone gate CMOS process
• 100-pin SQFP (YMF721-S).
GENERAL MIDI logo is a trademark of Association of Musical Electronics Industry (AMEI), and
indicates GM system level 1 Compliant.
YAMAHA CORPORATION
YMF721 CJuATlyAL1O0G, 1997
CATALOG No.:LSI-4MF721A20
Jury 10, 1997

YMF721 Datasheet
YMF721
PIN CONFIGURATION
YMF721-S
VDD
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
75 VSS
74 N.C.
73 N.C.
72 N.C.
71 N.C.
70 N.C.
69 N.C.
68 N.C.
67 N.C.
66 N.C.
65 N.C.
64 VSS
63 VDD
62 N.C.
61 VSS
60 /TEST2
59 /RESETSEL
58 TD7
57 TD6
56 TD5
55 TD4
54 TD3
53 TD2
52 TD1
51 TD0
100 pin SQFP Top View
- 2 - July 10, 1997


Features Datasheet pdf YMF721 OPL4-ML2 FM + Wavetable Synthesiz er LSI OVERVIEW YMF721 (OPL4-ML2) is a high quality and low cost Wavetable syn thesizer LSI. YMF721 (OPL4-ML2) integra tes an OPL3 (FM synthesizer), General M IDI processor and 1 Mbyte Wavetable sam ple ROM into one chip, and complies wit h General MIDI (GM) system level 1. Thu s, it is best suited to multimedia appl ications, sound cards, MIDI synthesis m odules and other sound applications. Si nce this LSI outputs stereophonic 16 bi t digital signal (fs = 44.1 kHz), it ca n be connected directly with YMF701B, 7 11 or 715 (OPL3-SA, SA2 or SA3) or with YAC516(DAC16-L). Operating voltage, 3. 3 V, allows this LSI to be controlled w ith notebook personal computers. Power management functions (power down and su spend/resume functions) of OPL4-ML2 con tribute to low power consumption of per sonal computers into which this product is built-in. FEATURES • The Wavetab le synthesizer of this LSI is able to g enerate up to 24 types of sounds simultaneously. • Has an interfa.
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