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WM8983GEFL/V Datasheet(PDF) 68 Page - Wolfson Microelectronics plc |
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WM8983GEFL/V Datasheet(HTML) 68 Page - Wolfson Microelectronics plc |
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68 / 124 page  WM8983 Production Data w PD, Rev 4.3, May 2010 68 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R52 LOUT1 Volume control 7 LOUT1ZC 0 Headphone volume zero cross enable: 1 = Change gain on zero cross only 0 = Change gain immediately 6 LOUT1MUTE 0 Left headphone output mute: 0 = Normal operation 1 = Mute 5:0 LOUT1VOL 111001 Left headphone output volume: 000000 = -57dB 000001 = -56dB ... 111001 = 0dB ... 111111 = +6dB 8 HPVU Not latched LOUT1 and ROUT1 volumes do not update until a 1 is written to OUT1VU (in reg 52 or 53) R53 ROUT1 Volume control 7 ROUT1ZC 0 Headphone volume zero cross enable: 1 = Change gain on zero cross only 0 = Change gain immediately 6 ROUT1MUTE 0 Right headphone output mute: 0 = Normal operation 1 = Mute 5:0 ROUT1VOL 111001 Right headphone output volume: 000000 = -57dB 000001 = -56dB … 111001 = 0dB ... 111111 = +6dB 8 HPVU Not latched LOUT1 and ROUT1 volumes do not update until a 1 is written to OUT1VU (in reg 52 or 53) Table 41 OUT1 Volume Control SPEAKER OUTPUTS (LOUT2 AND ROUT2) The outputs LOUT2 and ROUT2 are designed to drive an 8Ω BTL speaker but can optionally drive two headphone loads of 16 Ω/32Ω or a line output (see Headphone Output and Line Output sections, respectively). Each output has an individual volume control PGA, an output boost/level shift bit, a mute and an enable as shown in Figure 34. LOUT2 and ROUT2 output the left and right channel mixer outputs respectively. The ROUT2 signal path also has an optional invert. The amplifier used for this invert can be used to mix in the AUXR signal with an adjustable gain range of -15dB -> +6dB. This allows a ‘beep’ signal to be applied only to the speaker output without affecting the HP or line outputs. |
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