ISD-T360 ETC [List of Unclassifed Manufacturers], ISD-T360 Datasheet - Page 75

• Manufacturer Part Number: ISD-T360
• Description: VoiceDSP Digital Speech Processor with Master/Slave, Full-Duplex Speakerphone, Multiple Flash and ARAM/DRAM Support
• Manufacturer: ETC [List of Unclassifed Manufacturers]

Example
GT
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:
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
GSW
Byte sequence:
Description:
Value (Hex)DTMF Digit
0 to 90 to 9
A A
B
C #
D
E
F
C
D
B
*
Microcontroller
VoiceDSP
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.
Generate Tone tone
14
14
AA
00
AA
40
2-35