W681307DG Datasheet, PDF (87/160 Pages) Winbond – USB1.1 CODEC Microprocessor Control Unit with 32KB Mask ROM and 4KB RAM.

W681307
Table 12-2 The PCM Output gain is provided to allow minor corrections for board-level analogue gain problems. The 4-bit numbers
allow +/- 16 dB adjustments and hard mute.
OutputGain(3:0)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
Nominal gain
0 dB
+1.5 dB
+3 dB
+5 dB
+7 dB
+10 dB
+13 dB
+16 dB
-∞ (Hard mute)
-16 dB
-13 dB
-10 dB
-7 dB
-5 dB
-3 dB
-1.5 dB
Actual gain
0 dB
+1.9
+3.5
+4.9
+7.0
+9.9
+13.5
+15.6
-∞
-18.1
-12.0
-8.5
-6.0
-4.1
-2.5
-1.2
Table 12-3 Tone levels are specified in linear values, referenced to ½ of the max PCM level (+3.17 dBm0). Tone level = -2.85 dBm0 +
20 log10 (TONEVOL / 32). Because there are 32 legal values, the following table contains only example values.
TONEVOLx(4:0)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
Actual level
(dBm0)
Disable
-32.9530
-26.9324
-23.4106
-20.9118
-18.9736
-17.3900
-16.0510
-14.8912
-13.8681
-12.9530
Tone Generator Gain Value
TONEVOLx(4:0)
Actual level
(dBm0)
0x0B
-12.1251
0x0C
-11.3694
0x0D
-10.6741
0x0E
-10.0304
0x0F
-9.4312
0x10
-8.8706
0x11
-8.3440
0x12
-7.8475
0x13
-7.3779
0x14
-6.9324
0x15
-6.5086
TONEVOLx(4:0)
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
Actual level
(dBm0)
-6.1045
-5.7184
-5.3488
-4.9942
-4.6535
-4.3257
-4.0098
-3.7050
-3.4106
-3.1258
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Publication Release Date: May, 2007
Revision 1.3