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YMF740C 반도체 회로 부품 판매점

DS-1L



ETC 로고
ETC
YMF740C 데이터시트, 핀배열, 회로
YMF740C
DS-1L
OVERVIEW
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.
FEATURES
• 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)
emulation
• Legacy Audio compatibility
FM Synthesizer
Hardware Sound Blaster Pro compatibility
MPU401 UART mode MIDI interface
Joystick
• 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.
YAMAHA CORPORATION
YMF740C CATALOG
CATALOG No.:LSI-4MF740C20
SeJpantueamryb14e,r129919, 1998


YMF740C 데이터시트, 핀배열, 회로
YMF740C
PIN CONFIGURATION
YMF740C-V
GP4
GP5
GP6
GP7
RXD
TXD
VOLDW#
VOLUP#
VDD5
VDD3
VSS
VSS
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
INTA#
VSS
RST#
VDD5
PVSS
PCICLK
PVDD
GNT#
REQ#
AD31
AD30
AD29
PVSS
AD28
AD27
AD26
PVSS
AD25
AD24
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
26
27
28
29
30
31
32
33
34
35
36
108 NC
107 NC
106 NC
105 NC
104 NC
103 NC
102 NC
101 NC
100 VSS
99 VSS
98 VDD3
97 VDD5
96 PVDD
95 NC
94 PCREQ#
93 PCGNT#
92 NC
91 AD0
90 AD1
89 PVSS
88 AD2
87 AD3
86 AD4
85 PVSS
84 AD5
83 AD6
82 AD7
81 PVSS
80 PVDD
79 CBE0#
78 AD8
77 AD9
76 PVSS
75 AD10
74 AD11
73 AD12
144 Pin LQFP Top View
January 14, 1999
-2-




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