ISD-T360SA

The ISD-T360SA 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 ISD-T360SA has the following features include:(1)highest quality speech recording in PCM format for music on hold or other OGM (Out Going Message) recording and IVS;(2)selectable high-quality speech compression rate of 4,7 Kbit/s, 6,7 Kbit/s or 8,7 Kbit/s;(3)up to approximately 15 minutes recording on a 4-mbit flash;(4)up to 4 hour speech recording;(5)high-quality music compression for music on hold (64 Kbit/s PCM);(6)programmable message tag for message categorization, e,g& mailboxes, incoming messages (ICM), outgoing messages (OGM);(7)message management;(8)skip forward or backward during message playback;(9)variable speed playback;(10)real-time clock; day of week, hours, minutes;(11)multi-lingual speech synthesis using international vocabulary support (IVS).

The absolute maximum ratings of the ISD-T360SA are:(1)all input and output voltages with respect to GND:-0.5 to +6.5V;(2)storage temperature range:-65 to +150;(3)temperature under bias:0 to +70.The ISD-T360SA manages messages for a wide range of applications, which require different levels of DTAD functionality, The VoiceDSP processor features  advanced  memory-organization  features  such  as  multiple  OutGoing  Messages(OGMs), mailboxes, and the ability to distinguish between Incoming Messages (ICMs) and OGMs.When a message is created with the CMSG command the data to be recorded is provided by the microcontroller, via the WMSG (Write Message) command and not through the codec, Here, the data is transferred directly to the message memory, and not compressed by the ISD-T360SA voice compression algorithm.This PDM command may only be issued when the processor is in IDLE mode (for an explanation of the ISD-T360SA states, see"The State Machine' on page 2-1).If it is necessary to switch to power-down mode from any other state, the controller must first issue a S (Stop) command to switch the processor to the IDLE state, and then issue the PDM command, Sending any command while in power-down mode resets the VoiceDSP processor detectors,  and  returns it to normal  operation mode.