ML7029 데이터 시트보기 (PDF) - Oki Electric Industry
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ML7029 Datasheet PDF : 29 Pages
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OKI Semiconductor
FEDL7029-03
ML7029
(4) CR3 (Side tone gain setting)
B7
B6
B5
B4
B3
B2
B1
B0
CR3
Side Tone Side Tone Side Tone
GAIN2 GAIN1 GAIN0
—
—
—
HPF
8k/11k
HPF
ON/OFF
Initial Value
0
0
0
*
*
*
0
0
B7, B6, B5: Side tone path gain setting. Refer to Table 3.
B4 to B2: Not used (These pins are used to test the device. They should be set to “0” during normal operation.)
Table 3 Side Tone Pash Gain Setting (when SYNC = 8 kHz)
B7
B6
B5
Side Tone Path Gain
0
0
0
OFF
0
0
1
–21 dB
0
1
0
–19 dB
0
1
1
–17 dB
1
0
0
–15 dB
1
0
1
–13 dB
1
1
0
–11 dB
1
1
1
–9 dB
B1:
Transmit HPF cut-off frequency select;
0/The cut-off frequency of the transmit HPF is the sampling frequency × 0.0275.
When SYNC = 8 kHz: 220 Hz, when SYNC = 11.025 kHz: 300 Hz.
The transmit frequency characteristics are not guaranteed when selecting SYNC = 11.025 kHz.
1/The cut-off frequency of the transmit HPF is the sampling frequency × 0.0200.
When SYNC = 8 kHz: 160 Hz, when SYNC = 11.025 kHz: 220 Hz.
The transmit frequency characteristics are not guaranteed when selecting SYNC = 8 kHz.
B0:
Transmit HPF ON/OFF;
0/ON, 1/OFF
For the frequency characteristics, refer to Figures 9 to 12 in the Reference Data.
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