Audio effects processor integrated on a single chip with a multiport memory onto which multiple asynchronous digital sound samples can be concurrently loaded

• US 5,928,342 A
• Filed: 07/02/1997
• Issued: 07/27/1999
• Est. Priority Date: 07/02/1997
• Status: Expired due to Term

• Current Assignee: Creative Technology Ltd.
• Original Assignee: Creative Technology Ltd.
• Inventors: Fuller, Jay Scott, Rossum, David P.
• Primary Examiner(s): Lee, Thomas C.
• Assistant Examiner(s): WANG, ALBERT C
• Application Number:
  US08/887,100
• Time in Patent Office: 755 Days
• Field of Search: 395/309, 395/894, 704/200, 704/201, 345/302, 381/119, 710/129, 710/74
• US Class Current: 710/74
• CPC Class Codes: G06F 15/7842 on one IC chip (single chip microcontrollers)
• CPC Class Codes: G06F 3/16 Sound input; Sound output speech processing G10L
• CPC Class Codes: G06F 9/3824 Operand accessing

Abstract

A sound processor integrated on a single chip with multiple digital sound sample stream inputs. Each input is independently connected to separate ports of a multi-port memory. The architecture allows multiple, asynchronous digital sound sample streams to be concurrently loaded into the memory without requiring synchronization to any particular input stream.

Claims

1. A sound processor integrated on a single chip comprising:

a multiport memory;

a first digital sound sample input coupled to first port of said memory, wherein said first input is a CD ROM S/PDIF input;

a second digital sound sample input coupled to a second port of said memory, wherein said second input includes a serial data input pin and a bit clock pin; and

a third digital sound sample input coupled to a third port of said memory, wherein said third input is a Z video audio input having a serial data pin, a bit clock pin and a word clock pin;

whereby multiple, asynchronous digital sound samples can be concurrently loaded into said memory.

2. A sound processor integrated on a single chip comprising:

a multiport memory;

first digital sound sample input coupled to a first port of said memory;

a second digital sound sample input coupled to a second port of said memory; and

a PCI host interface port, wherein said PCI host interface port includes PCI bus master signal lines for bus request and bus grant, and said PCI host interface port is configured for only big endian mode;

whereby multiple, asynchronous digital sound samples can be concurrently loaded into said memory.

3. A sound processor integrated on a single chip comprising:

a multiport memory;

a first digital sound sample input coupled to a first port of said memory;

a second digital sound sample input coupled to a second port of said memory;

a data input line;

a joystick input port; and

a circuit coupled to said data input line and said joystick input port for disabling said joystick input port when said data input line is pulled high;

whereby multiple, asynchronous digital sound samples can be concurrently loaded into said memory.

4. The sound processor of claim 3 wherein said data input line is an EEPROM input.

5. A sound processor integrated on a single chip comprising:

a multiport memory;

a first digital sound sample input coupled to a first port of said memory;

a second digital sound sample input coupled to a second port of said memory;

a PCI host interface port;

a host FIFO buffer coupled to said host interface port; and

a general purpose SPDIF data input coupled to said host FIFO buffer;

whereby multiple, asynchronous digital sound samples can be concurrently loaded into said memory.

6. A sound processor integrated on a single chip comprising:

a multiport memory;

a first digital sound sample input coupled to a first port of said memory;

a second digital sound sample input coupled to a second port of said memory;

at least three SPDIF output lines;

a CODEC compatible output port including

a sync output line,

a serial data output line, and

a reset not output line; and

a mixer compatible output port including

a chip select not output line,

a bit clock output line, and

a serial data output line;

whereby multiple, asynchronous digital sound samples can be concurrently loaded into said memory.

7. A sound processor integrated on a single chip comprising:

a multiport memory;

a CD ROM SPDIF input coupled to a first port of said memory;

a second digital sound sample input including a serial data input line and a bit clock line, said serial data input line being coupled to a second port of said memory;

a Z video audio input having a serial data pin, a bit clock pin and a word clock pin, said serial data line being coupled to a third port of said memory;

whereby multiple, asynchronous digital sound samples can be concurrently loaded into said memory;

a PCI host interface port including PCI bus master signal lines for bus request and bus grant, said PCI host interface port being configured for only big endian mode;

an EEPROM data input line;

a joystick input port;

a host FIFO buffer coupled to said host interface port;

a general purpose SPDIF data input coupled to said host FIFO buffer;

a modem control port including a ring pin, a hook pin, an LCS pin, a hand pin and a pulse pin;

a MIDI port including a MIDI UART input pin and a MIDI UART output pin;

at least three SPDIF output lines;

a CODEC compatible output port including

a sync output line,

a serial data output line, and

a reset not output line; and

a mixer compatible output port including

a chip select not output line,

a bit clock output line, and

a serial data output line.

8. The sound processor of claim 7 further comprising:

a circuit coupled to said EEPROM data input line and said joystick input port for disabling said joystick input port when said data input line is pulled high.