ISD-T360SB Datasheet, PDF (81/109 Pages) List of Unclassifed Manufacturers – VoiceDSP Digital Speech Processor with Master/Slave, Full-Duplex Speakerphone, Multiple Flash and ARAM/DRAM Support

2—SOFTWARE
Example
PA
Byte sequence:
Description:
Microcontroller
VoiceDSP
Suspend playback of current message.
ISD-T360SB
1C
1C
PDM
Go To Power-Down Mode
Switches the VoiceDSP processor to power-down mode (see “POWER-DOWN MODE” on page 1-4 for
details). Sending any command while in power-down mode resets the processor detectors, and re-
turns it to normal operation mode.
NOTE If an event report is pending (MWRQST is active) and not processed by the microcontroller prior to
issuing the PDM command, the event is lost.
Example
PDM
Byte sequence: Microcontroller
1A
VoiceDSP
1A
Description:
Put the VoiceDSP processor in power-down mode.
R
Record tag compression_rate
Records a new message with message tag tag and compression rate compression_rate. The VoiceD-
SP processor state changes to RECORD. The R command continues execution until stopped by the S
command. Recording can be paused with the PA command, and can be resumed later with the RES
command.
If the memory becomes full, recording stops and EV_MEMFULL is set in the status word.
See “Message Tag” on page 2-3 for a description of message-tag encoding.
The compression rate may be defined as 0 for PCM recording or either 1, 3, 6 for compression rates 5.3
Kbits/sec, 9.9 Kbits/sec, 16.8 Kbits/sec respectively. See “ VCD” on page 2-10 for a description of the
compression algorithm.
NOTE
A time-and-day stamp is automatically attached to each message. Before using the R command
for the first time, use the SETD command. Failure to do so results in undefined values for the time-and-
day stamp.
Example of a typical recording session:
• (ICM) The microcontroller detects the first ring.
• (ICM, OGM, memo) The microcontroller sends the R command.
ISD
2-41