ML7041 데이터 시트보기 (PDF) - Unspecified
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ML7041 Datasheet PDF : 28 Pages
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FEDL7041-05
ML7041
CR3 (Side tone and other tone generator gain setting)
CR3
Initial Value
B7
B6
B5
B4
SIDE TONE SIDE TONE SIDE TONE TONE
GAIN2
GAIN1
GAIN0 ON/OFF
0
0
0
0
B3
TONE
GAIN3
0
B2
TONE
GAIN2
0
B1
TONE
GAIN1
0
B0
TONE
GAIN0
0
B7, B6, B5 ..........Side tone path gain setting (refer to Table 3)
B4 .......................Tone generator ON/OFF 0: OFF 1: ON
B3, B2, B1, B0 ....Tone generator gain adjustment for receive side (refer to Table 4)
Table 3 Side Tone Gain Settings
B7 B6 B5
Side Tone Path Gain
0
0
0
OFF
0
0
1
–15 dB
0
1
0
–13 dB
0
1
1
–11 dB
1
0
0
–9 dB
1
0
1
–7 dB
1
1
0
–5 dB
1
1
1
–3 dB
Table 4 Receive Side Tone Generator Gain Settings
B3 B2 B1 B0 Tone Generator Gain B3 B2 B1 B0 Tone Generator Gain
0000
OFF
1000
–20 dB
0001
–34 dB
1001
–18 dB
0010
–32 dB
1010
–16 dB
0011
–30 dB
1011
–14 dB
0100
–28 dB
1100
–12 dB
0101
–26 dB
1101
–10 dB
0110
–24 dB
1110
–8 dB
0111
–22 dB
1111
–6 dB
The receive side tone generator gain settings shown in Table 4 are referenced to the following levels as
a reference.
DTMF tones (low group): .............................. +4 dBm0
DTMF tones (high group) and others tones: . +6 dBm0
For example, if the tone generator gain set value is set to –6 dB (B3, B2, B1, B0) = (1, 1, 1, 1), then
tones at the following levels are output at EXTO.
DTMF tone (low group): ................................ –2 dBm0
DTMF tone (high group) and other tones:..... 0 dBm0
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