Datenblatt-pdf.com


EMU8000 Schematic ( PDF Datasheet ) - ETC

Teilenummer EMU8000
Beschreibung Programmer Guide
Hersteller ETC
Logo ETC Logo 




Gesamt 26 Seiten
EMU8000 Datasheet, Funktion
www.DataSheAetW4UE.3c2o/mEMU8000 Programmer’s Guide
.comRevision 1.00
UBy Dave Rossum
www.DataSheet4www.DataSheet4U.comCopyright © E-mu/Creative Technology Ltd. 1994-1996. All rights reserved.






EMU8000 Datasheet, Funktion
1 Introduction
1.1 Scope and Intended Purpose of this Document
This document is intended to be an official release of the EMU8000 programming within the
AWE32 environment. The descriptions herein should be sufficient to allow programming of the
EMU8000 for all normal functions. The focus in this document is on highly technical aspects of
the EMU8000 chip. We assume that you are experienced programmer and familiar with
hardware level programming.
1.2 Overview
The EMU8000 is a 32 channel wavetable synthesis chip with extensive ability to modulate the
sound. In the AWE32 environment, Sound Memory comprises a General MIDI Sound ROM of
1 MB size, and Sound DRAM of a minimum size of 0.5MB.
The EMU8000 has very little on-board intelligence. It requires extensive initialization on power-
up before any use can be made of its facilities. This initialization phase configures it for the
AWE32 environment, brings the chip to a known, silent state, and enables audio output.
Once the EMU8000 has been initialized, sounds can be played, or Sound DRAM can be loaded
with additional sounds.
The EMU8000 comprises 32 audio channels, each of which has a large number of parameters.
There are also a number of global parameters which apply to all channels. The extensive
register bank of the EMU8000 is accessed by means of a specialized interface.
2 EMU8000 Interface
The EMU8000 in the AWE32 environment appears as one doubleword I/O port two I/O ports
which may serve as either a doubleword or two separate word ports and two word only I/O ports
located relative to the BLASTER environment variable. These ports are named as follows:
Location
BLASTER+0x400
BLASTER+0x800
BLASTER+0x802
Size
Doubleword
Word or
Doubleword
Word
Name
Data0
Data1
Data2
Function
Read and write of doubleword data
Read and write of word and doubleword
data
Read and write of word data
EMU8000 Programmer's Guide
Copyright © E-mu/Creative Technolgy Ltd. 1994-1996. All Rights Reserved.
Page 6

6 Page









EMU8000 pdf, datenblatt
Register : SMARR
Description : Sound Memory Address for “Right” SM Reads
31 30
MT 0
24 23
SMARR
0
Bit 31 of this doubleword register is an “empty” bit, which indicates whether register SMRD is
empty or full of data for reading. When low, the DMA data is ready to be read from the sound
memory into the SMRD register. Read only.
Bits 31-24 are Don’t Care on write, and bits 30-24 are zero on read.
Bits 23-0 are the sound memory address which will be used for “right” DMA stream data fetch
the next time the SMRD read register becomes empty and a DMA channel is available to fill it.
Register : SMALW
Description : Sound Memory Address for “Left” SM Writes
31 30 24 23
FULL 0
SMALW
0
Bit 31 of this doubleword register is a “full” bit, which indicates whether register SMLD is
empty or full of data for writing. When low, indicates the DMA data can be written to the
SMRD register. Read only.
Bits 31-24 are Don’t Care on write, and bits 30-24 are zero on read.
Bits 23-0 are the sound memory address which will be used for “left” DMA stream data write if
the SMLD write register is full and a DMA channel is available to write it.
Register : SMARW
Description : Sound Memory Address for “Right” SM Writes
31 30 24 23
FULL 0
SMARW
0
Bit 31 of this doubleword register is a “full” bit, which indicates whether register SMRD is
empty or full of data for writing. When low, indicates the DMA data can be written to the
SMRD register. Read only.
Bits 31-24 are Don’t Care on write, and bits 30-24 are zero on read.
EMU8000 Programmer's Guide
Copyright © E-mu/Creative Technolgy Ltd. 1994-1996. All Rights Reserved.
Page 12

12 Page





SeitenGesamt 26 Seiten
PDF Download[ EMU8000 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
EMU8000Programmer GuideETC
ETC

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche