ml7084-001 Oki Semiconductor, ml7084-001 Datasheet - Page 161

• Manufacturer Part Number: ml7084-001
• Description: 4ch Voip Codec
• Manufacturer: Oki Semiconductor

Tone Generator 1 (TGEN1 )
This generator can generate various tones on both the transmit and receive sides of CH1. The following describes
various parameters that can be set for this generator.
A. Internal data memory for tone frequency control
B. Internal data memory for tone gain control
OKI Semiconductor
TONE C frequency control (TGEN1_FREQ_C)
TONE D frequency control (TGEN1_FREQ_D)
As the defaults, a tone of 400 Hz is output for TONE C and a tone of 15 Hz is output for TONE D. Use the
following equation to compute the value of the setting when changing the frequency.
Equation: f × 8.192 (f is the frequency to be set)
Example: To set a frequency of 2100 Hz:
2100 × 8.192 ≠ 4333h
Upper limit
Lower limit
TONE C gain control (TGEN1_GAIN_C)
TONE D gain control (TGEN1_GAIN_D)
The output level as the default will be –13.3 dBm0. Use the following equation to compute the value of the
setting when changing the output level.
Equation: 0080h×GAIN
Example: For reducing the gain by 6 dB (×0.5):
0080h × 0.5 = 0040h
Upper limit
Lower limit
Note:
Make sure that the maximum amplitude does not exceed 3.17 dBm0 when the tones are multiplied or added.
Initial value: 0CCDh (400 Hz)
Initial value: 007Bh (15 Hz)
Initial value: 0080h
Initial value: 0080h
: 3 kHz
: 15 Hz
: +12 dB (data: 01FEh)
: −12 dB (data: 0020h)
(data: 6000h)
(data: 007Bh)
FEDL7224-001FULL-01
ML7224-001TC
161/225