DVSR CODEC
2
MX802
Contents
Section
Page
1 Block Diagram................................................................................................................ 3
2 Signal List....................................................................................................................... 4
3 External Components.................................................................................................... 6
4 General Description....................................................................................................... 7
4.1
Controlling Protocol ............................................................................................................. 8
4.1.1
4.1.2
4.1.3
4.1.4
Address/Commands............................................................................................................... 8
Operation with DRAM............................................................................................................. 8
Speech ................................................................................................................................... 9
Data Handling....................................................................................................................... 10
General Reset ...................................................................................................................... 12
Direct Access ....................................................................................................................... 12
Play Counter......................................................................................................................... 12
DRAM Control ...................................................................................................................... 12
Codec Powersave ................................................................................................................ 12
Command Interrupt Enable .................................................................................................. 12
Store and Play Speech Synchronization .............................................................................. 12
Decoder and Encoder Control.............................................................................................. 12
Time Compression of Speech .............................................................................................. 15
Interrupts .............................................................................................................................. 15
Power Register..................................................................................................................... 15
4.2
Write to Control Register ................................................................................................... 12
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.3
4.4
Encoder and Decoder Control : Analog Input and Output Control..................................... 14
4.3.1
4.4.1
4.4.2
Read Status Register ........................................................................................................ 15
5 Application – Codec Performance ............................................................................. 17
6 Performance Specifications........................................................................................ 19
6.1
Electrical Specifications..................................................................................................... 19
6.1.1
6.1.2
6.1.3
6.1.4
Absolute Maximum Limits .................................................................................................... 19
Operating Limits ................................................................................................................... 19
Operating Characteristics..................................................................................................... 20
Timing................................................................................................................................... 21
6.2
Packages........................................................................................................................... 23
MXCOM, Inc. reserves the right to change specifications at any time without notice.
1998
MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480033.008
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.
CMLMICRO [ CML MICROCIRCUITS ]
