
D6571E Data Sheet
DS6571E.2
DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986-4300 FAX: 408 986-4490
2
TABLE OF CONTENTS:
GENERAL DESCRIPTION....................................................................................................................................................................5
FEATURES...........................................................................................................................................................................................5
CHIP CONFIGURATION....................................................................................................................................................................6
ADDITIONAL SYSTEM COMPONENTS (supplied by the customer according to DSP Group’s specifications)..............6
PIN DESCRIPTIONS............................................................................................................................................................................7
FUNCTIONAL DESCRIPTION............................................................................................................................................................9
HOST Interface.....................................................................................................................................................................................9
Voice Message Recording Incoming and Outgoing Messages ...................................................................................................9
Digital Voice-Activated Recording (VOX).......................................................................................................................................9
Automatic Gain Control......................................................................................................................................................................9
Message Playback...............................................................................................................................................................................9
Offset and FLEXISPEECH
..............................................................................................................................................................9
Message Deletion..............................................................................................................................................................................10
Message Time Stamp ........................................................................................................................................................................10
Volume Control...................................................................................................................................................................................10
Tone Generation.................................................................................................................................................................................10
DTMF Detection................................................................................................................................................................................10
Call Progress Tone (CPT) Detection...............................................................................................................................................10
Caller Identification (CID and CWCID)..........................................................................................................................................10
Caller Alert Signal (CAS) Detection................................................................................................................................................10
Sensitivity Control.............................................................................................................................................................................10
Speed Dial Telephone Number Storage..........................................................................................................................................10
Non-Erasable Storage........................................................................................................................................................................10
General Purpose Storage...................................................................................................................................................................10
Self Test and Initialization ................................................................................................................................................................11
Reports ................................................................................................................................................................................................11
Voice Prompt Generation..................................................................................................................................................................11
Near End Echo Cancellation.............................................................................................................................................................11
Full Duplex Digital SpeakerPhone...................................................................................................................................................11
Power Down Mode............................................................................................................................................................................11
OPERATIONAL DESCRIPTION.......................................................................................................................................................12
INITIAL PROCEDURE......................................................................................................................................................................12
MODES OF OPERATION.................................................................................................................................................................12
DESCRIPTION OF MODES OF OPERATION...............................................................................................................................13
Idle...................................................................................................................................................................................................13
Record.............................................................................................................................................................................................13
Playback..........................................................................................................................................................................................14
Read Memory Status....................................................................................................................................................................15
Telephone Number Storage.........................................................................................................................................................16
Non-Erasable Storage...................................................................................................................................................................16
General Purpose Storage (GPS)...................................................................................................................................................16
Tone Generation Mode ................................................................................................................................................................16
New Tone Definition.....................................................................................................................................................................17
FSK Modem...................................................................................................................................................................................17
Line Monitoring Mode.................................................................................................................................................................17
CID Submode.................................................................................................................................................................................18
Delete Message.............................................................................................................................................................................18
Set/Modify Time Stamp................................................................................................................................................................19
Get Time Stamp..............................................................................................................................................................................19
Get Available Record Time..........................................................................................................................................................19