YMF754
DS-1E
YAMAHA CORPORATION
December 18, 1998
YMF754 CATALOG
CATALOG No.:LSI-4MF754A00
June 28, 1999
Preliminary
OVERVIEW
YMF754 (DS-1E) is a high performance audio controller for the PCI Bus. DS-1E consists of two separated
functional blocks. One is the PCI Audio block and the other is the Legacy Audio block.
PCI Audio block provides 64-voice XG wavetable synthesizer with reverb and variation by using the software
driver from YAMAHA. 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.
DS-1E supports the connection to AC'97 which provides high quality DAC, ADC and analog mixer, and it can
connect two AC'97s. In addition, it supports consumer IEC958, Digital Audio Interface (SPDIF In/Out), to
connect external audio equipment by digital.
In addition to support the same functions of YMF744B (DS-1S), DS-1E adds direct recording function for
SPDIF In, and realizes to use SPDIF In and Zoomed Video Port at the same time. And, DS-1E is featured
with the capability of dramatically reducing power consumption at normal operation.
FEATURES
PCI 2.2 Compliant
PC98 / PC99 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 PC/PCI and Distributed DMA for legacy
DMAC (8237) emulation
Supports Serialized IRQ
Supports I
2
S serial input for Zoomed Video Port
Supports Consumer IEC958 Port (SPDIF In/Out)
Supports direct recording function for SPDIF In
Capability for using SPDIF In and Zoomed Video
Port at the same time.
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)
Power supply: 3.3V for I/O (5V tolerant),
2.5V for Internal core logic
128-pin LQFP YMF754-V : 0.5mm pin pitch
YMF754-R : 0.4mm pin pitch
The contents of this catalog are target specifications and are subject to change
without prior notice. When using this device, please recheck the specifications.
YMF754
June 28, 1999
-2-
LOGOS
1. GM system level 1
GM system level 1 is a world standard format about MIDI synthesizer which provides voice arrangements
and MIDI functions.
2. XG
XG is a format about MIDI synthesizer that is proposed by YAMAHA, and keeps the upper compatibility of
GM system level 1. The good points are the voice arrangements kept extensively, a large number of the
voices, modification of the voices, 3 kinds of effects, and so on.
3. SONDIUS-XG
Products bearing the SONDIUS-XG logo are licensed under patents of Stanford University and YAMAHA
Corporation as listed on <http://www.sondius-xg.com>. The SONDIUS-XG produces acoustic sound
outputs by running a virtual simulation of the actual acoustic instrument operation. Therefore, it provides
much more real-world acoustic sound outputs fundamentally different from the Wavetable sound generator
that simply processes the recorded acoustic sound sources only. The SONDIUS-XG adds the technology
of virtual acoustic sound to the XG format.
4. Sensaura
Sensaura is a technology which provides 3D positional audio and moving effect by HRTF (Head Related
Transfer Function) with 2 speakers or headphone. This feature makes it possible to enjoy invariable and
unchangeable sound feelings in all-positional area covering as wide as 360 degrees.
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.
SONDIUS-XG logo is a trademark that Stanford University in the United States and
YAMAHA Corporation hold jointly.
Sensaura logo is a trademark of Central Research Laboratories Limited.
YMF754
June 28, 1999
-5-
PIN DESCRIPTION
1. PCI Bus Interface (54-pin)
Name
I/O
Type
Size
Function
PCICLK
I
P
-
PCI Clock
RST#
I
P
-
Reset
AD[31:0]
IO
Ptr
-
Address / Data
C/BE[3:0]#
IO
Ptr
-
Command / Byte Enable
PAR
IO
Ptr
-
Parity
FRAME#
IO
Pstr
-
Frame
IRDY#
IO
Pstr
-
Initiator Ready
TRDY#
IO
Pstr
-
Target Ready
STOP#
IO
Pstr
-
Stop
IDSEL
I
P
-
ID Select
DEVSEL#
IO
Pstr
-
Device Select
REQ#
O
P
-
PCI Bus Master Request
GNT#
I
P
-
PCI Bus Master Grant
PCREQ#
O
Ptr
-
PC/PCI Request
PCGNT#
I
Ptr
-
PC/PCI Grant
PERR#
IO
Pstr
-
Parity Error
SERR#
O
Pod
-
System Error
INTA#
O
Pod
-
Interrupt signal output for PCI Bus
SERIRQ#
IO
Ptr
-
Serialized IRQ
CLKRUN#
IO
Ptr
-
Clock Run
2. AC'97 Interface (8-pin)
Name
I/O
Type
Size
Function
CRST#
O
T
6mA
Reset signal for AC'97
CMCLK
O
C
-
Master Clock for AC'97 (24.576MHz)
CBCLK
I
T
-
AC-link: Bit Clock for AC'97 audio data
CSDO
O
T
6mA
AC-link: AC'97 Serial audio output data
CSYNC
O
T
6mA
AC-link: AC'97 Synchronized signal
CSDI0
I
T
-
AC-link: AC'97 Serial audio input data (Primary)
CSDI1
I
Tup
-
AC-link: AC'97 Serial audio input data (Secondary)
DOCKEN#
I
Tup
-
Secondary AC'97 Enable
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