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 Address/Commands...............................................................................................................8
4.1.2 Operation with DRAM.............................................................................................................8
4.1.3 Speech ...................................................................................................................................9
4.1.4 Data Handling.......................................................................................................................10
4.2 Write to Control Register ................................................................................................... 12
4.2.1 General Reset ......................................................................................................................12
4.2.2 Direct Access .......................................................................................................................12
4.2.3 Play Counter.........................................................................................................................12
4.2.4 DRAM Control ......................................................................................................................12
4.2.5 Codec Powersave ................................................................................................................12
4.2.6 Command Interrupt Enable .................................................................................................. 12
4.2.7 Store and Play Speech Synchronization..............................................................................12
4.2.8 Decoder and Encoder Control..............................................................................................12
4.3 Encoder and Decoder Control : Analog Input and Output Control..................................... 14
4.3.1 Time Compression of Speech..............................................................................................15
4.4 Read Status Register ........................................................................................................ 15
4.4.1 Interrupts ..............................................................................................................................15
4.4.2 Power Register.....................................................................................................................15
5 Application – Codec Performance .............................................................................17
6 Performance Specifications........................................................................................19
6.1 Electrical Specifications..................................................................................................... 19
6.1.1 Absolute Maximum Limits ....................................................................................................19
6.1.2 Operating Limits ...................................................................................................................19
6.1.3 Operating Characteristics.....................................................................................................20
6.1.4 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 ]
