ISD-T360SB Datasheet, PDF (67/109 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
Bit 23
Reserved.
Example
CFG 144013
Byte sequence:
Description:
Microcontroller
01
14
40
13
VoiceDSP
01
14
40
13
Configure the VoiceDSP to work with:
Single codec in Slave Mode and A-Law compressed samples.
Data in Short Frame format and Single Bit Rate interface.
Two Serial Toshiba Flash devices.
Echo Cancellation for DTMF detectiopn is On.
CMSG
Create Message tag num_of_blocks
Creates a new message with a message tag tag, allocates num_of_blocks 4-Kbytes blocks for the new
message, and sets the message pointer to the beginning of the message data. CMSG switches the
VoiceDSP processor to the MSG_OPEN state.
The memory space available for the message data is computed as follows:
(127 x num_of_blocks – 2) x 32 bytes.
Once a message is open (the processor is in the MSG_OPEN state), the message pointer can be set to
any position on a page (32 bytes) boundary within the message with the SMSG command. Modify the
message contents with the WMSG command, and read with the RMSG command.
The microcontroller must issue an S command to close the message and switch the VoiceDSP proces-
sor to the IDLE state.
If the memory is full, EV_MEMFULL is set in the status word and no message is created. If the memory is
not full but there is insufficient memory and the processor cannot allocate more memory space,
EV_MEMLOW is set in the status word and no message is created.
Example
CMSG 0101 0001
Byte sequence:
Description:
Microcontroller
33
01
01
00
01
VoiceDSP
33
01
01
00
01
Create a new message with a tag=0101, and allocate 1 block (4 Kbytes) for its data.
ISD
2-27