Version: 1.18
PRELIMINARY/CONFIDENTIAL
TrueSpeech® Co-Processor
This table shows the actual tone output level as a function of the level value. It is calculated by adding the level
value contained in the tone table to the level value specified in the MASTER GAIN field of the Generate Tone
command.
The CODEC output levels given are those produced by the VFR0 output pin of a Texas Instruments TP3054 µ-law
CODEC when connected to the CT8022 (600 Ohm load).
Note: A power amplifier with approximately 4 dB of gain drives the TP3054 output. A digital signal at 0
dBm0 (0.775 VRMs) will produce an output signal of 1.3 VRMs (+4.5 dBm-600 ohms) at the CODEC
output.
9.19.6
New Tone Initialization
Command (C1):
0110
10
00000
(9-5)
TONE INDEX
(4-0)
(15-12)
(11-10)
Status (S1):
0110
10
00000
(9-5)
TONE INDEX
(4-0)
(15-12)
(11-10)
Command (C2):
0110
0000
Gain 1
(7-4)
Gain 0
(3-0)
(15-12)
(11-8)
Status (S2):
0110
0000
Gain 1
(7-4)
Gain 0
(3-0)
(15-12)
(11-8)
Command (C3):
Status (S3):
Frequency Factor for Tone 0
(15-0)
Frequency Factor for Tone 0
(15-0)
Command (C4):
Frequency Factor for Tone 1
(15-0)
CT8022A11AQC FW Revision 0118 DSP GROUP, INC., 3120 SCOTT BOULEVARD
SANTA CLARA, CA 95054 PH: 408 986 – 4300 FAX: 408 986 – 4490
127
All specifications are subject to change without prior notice.
ETC [ ETC ]
