CT8022 Datasheet, PDF (125/194 Pages) List of Unclassifed Manufacturers – VOIP/VON G.723.1, G279AB TRUESPEECH CO-PROCESSOR

Version: 1.18
PRELIMINARY/CONFIDENTIAL
TrueSpeech® Co-Processor
9.19.3 Asynchronous Mode
In this mode, the On and Off period for the tone is pre-programmed by the Host, and then complete generation of the
tone (On and Off periods) is executed with a single command. The Host may poll the CT8022 during execution of
the command to determine when generation of the complete tone has finished.
Additional Tone Mode Commands
SET SYNCHRONOUS (default, CT8005 compatible ) TONE MODE
Command: 6E00H
Status:
6E00H
SET ASYNCHRONOUS TONE MODE
Command: 6E01H
Status:
6E01H
GET TONE MODE
Command: 6E02H
If in synchronous mode:
Status:
0000H
If in asynchronous mode:
Status:
00001H
This command can be used to determine the current tone mode.
The following group of commands are only effective in ASYNCHRONOUS tone mode:
SET TONE ON PERIOD
Command C1:
Status S1:
Command C2:
Status S2:
6E04H
6E04H
XXXXH = data value
XXXXH = data value echoed
SET TONE OFF PERIOD
Command C1:
Status S1:
Command C2:
Status S2:
6E05H
6E05H
XXXXH = data value
XXXXH = data value echoed
GET TONE ON PERIOD
Command: 6E06H
Status:
XXXXH = data value
GET TONE OFF PERIOD
Command: 6E07H
Status:
XXXXH = data value
The units used for setting and reading the tone On and Off period are 250 microseconds. By default the tone On and
tone Off periods are both set to 0192H (400 decimal) which is equivalent to a period of 100ms, (i.e. 400 * 250
microseconds = 100 milliseconds).
CT8022A11AQC FW Revision 0118
DSP GROUP, INC., 3120 SCOTT BOULEVARD
125
SANTA CLARA, CA 95054 PH: 408 986 – 4300 FAX: 408 986 – 4490
All specifications are subject to change without prior notice.