ISD-T360SB Datasheet, PDF (75/109 Pages) List of Unclassifed Manufacturers – VoiceDSP Digital Speech Processor with Master/Slave, Full-Duplex Speakerphone, Multiple Flash and ARAM/DRAM Support

2—SOFTWARE
ISD-T360SB
Example
GSW
Byte sequence:
Description:
Microcontroller
14
AA
AA
VoiceDSP
14
00
40
Get the VoiceDSP processor Status Word (typically sent after the MMRQST signal is
asserted by the VoiceDSP processor which indicates a change in the status word).
The VoiceDSP processor responds that the memory is full.
GT
Generate Tone tone
Generates the tone specified by the 1-byte tone parameter. The VoiceDSP state changes to
TONE_GENERATE. The tone generation continues until an S command is received.
A DTMF or a single frequency tone may be generated as shown:
To generate a DTMF encode the bits as follows:
Bit 0
1
Bits 1–4
DTMF code.
Where the DTMF code is encoded as follows:
Value (Hex)DTMF Digit
0 to 90 to 9
AA
B*
C#
DB
EC
FD
Bits 5–7
0
To generate a single frequency tone encode the bits as follows:
Bit 0
0
Bits 1-5
3–30
The value in bits 1–5 is multiplied by 100 to generate the required frequency (300Hz–3000Hz).
ISD
2-35