Features: DTAD MANAGEMENT
` Highest quality speech recording in PCM format for music on hold or other OGM (Out Going Message) recording and IVS
` Selectable high-quality speech compression rate of 5.3 Kbit/s, 9.9 Kbits or 16.8 Kbit/s, plus silence compression with each rate
` Up to 16 minutes recording on a 4-Mbit Flash
` High-quality music compression for music on hold (16.8 Kbits)
` Programmable message tag for message categorization, e.g., Mailboxes, InComing Messages (ICM), OutGoing Messages (OGM)
` Message management
` Skip forward or backward during message playback
` Variable speed playback
` Real-time clock: Day of Week, Hours, Minutes
` Multi-lingual speech synthesis using
International Vocabulary Support (IVS)
` Vocabularies available in: English, Japanese, Mandarin, German, French and Spanish
` Software Automatic Gain Control (AGC)
SPEAKERPHONE
` Digital full-duplex speakerphone
` Acoustic- and line-echo cancellation
` Continuous on-the-fly monitoring of external and internal conditions (acoustic and line) provides high-quality, hands-free, conversation in a changing environment
` Minimum microcontroller control intervention (Launch-and-forget)
` Supports: On, Off, Mute, and Hold functions
CALL AND DEVICE MANAGEMENT
` Digital volume control
` Least cost routing support (LCR)
` Power-down mode
` 3V to 5V selectable power supply
` 4.096 MHz operation
` DTMF generation and detection
` Telephone line functions, including busy and dial tone detection
` Single tone generation
` DTMF detection during message playback
PERIPHERAL CONTROL
Codec
` -Law, A-Law, and 16-bit linear codec input support
` Selectable master/slave codec interface
` Supports two in-coming lines in slave mode without speakerphone for DTAD recording
` Supports up to 16 user selectable speech channels in slave mode
` Supports long-frame and short-frame codecs
` Single/double bit clock rate for slave mode
` On-chip codec clock generation Memory
` Supports up to four 4-Mbit, four 8-Mbit, or four 16-Mbit Flash devices from Toshiba or Samsung
` Supports up to four 16-Mbit ARAM/DRAM memory devices from Toshiba, Samsung, and Samsung-compatible
` The number of messages that can be stored is limited only by memory size
` Direct access to message memory
` Message storage contains all data in a concatenated chain of memory blocks.
` Memory mapping and product floor test included
` Supports external vocabularies, using Flash memory or expansion ROM Microwire
` MICROWIRE slave interface to an external microcontroller
` Sophisticated command language to optimize system code sizePinout
Specifications
| Storage temperature |
65 to +150 |
| Temperature under bias |
0 to +70 |
| All input and output voltages with respect to GND |
0.5 V to +6.5 V |
NOTE Absolute maximum ratings indicate limits beyond which permanent damage may occur. Continuous operation at these limits is not intended; operation should be limited to the conditions specified below.DescriptionThe VoiceDSP™ product family combines multiple digital signal processing functions on a single chip for cost-effective solutions in telephony, automotive and consumer applications.
The VoiceDSP processor offers necessary features to modern telephony products, such as: high-quality, speech record and playback, electrical and acoustic echo cancellation for full-duplex hands-free speakerphone operation.
The ISD-T360SB VoiceDSP can be used in various applications:
` Digital telephony with add-on speech processing: Digital Telephone Answering Machines(DTADs); and full-duplex, handsfree speakerphone operation for ISDN, DECT, Digital Spread Spectrum, and analog cordless applications; CT0/1 Base stations.
` An add-on chip for corded telephones featuring DTAD functions and/or fullduplex, hands-free speakerphone operation.
` Stand-alone digital answering machines with full-duplex, hands-free speakerphone operation.
` Voice memo recording
` Automotive applications employing fullduplex speakerphone operations for hands-free, in-car communications, and for car status and information announcements.
Based on ISD's unique concept which combines 16-bit DSP (Digital Speech Processor) and 16-bit RISC core technology, the ISD-T360SB is a highperforming chip solution for various applications. To facilitate incorporating the VoiceDSP processor,it features system support functions such as an interrupt control unit, codec interface (master,slave), Microwire interface to the system micro controller,as well as a memory handler for Flash and DRAM memory devices. Design of high-end, price optimized systems are possible with ISD's VoiceDSP flexible system interfaces (codec, microcontroller, and memory management support).
The ISD-T360SB processor operates as a peripheral controlled by the system microcontroller via an enhanced, serial Microwire interface. The system microcontroller typically controls the analog circuits, buttons and display, as well as activates functions through commands. The VoiceDSP executes these commands and returns status information to the Microcontroller.
The VoiceDSP software resides in the on-chip ROM. It includes DSP-based algorithms, system support functions, and a software interface to hardware peripherals.
ISD-T360SB Data Sheet
