 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
WM8955LEFL Datasheet(PDF) 24 Page - Wolfson Microelectronics plc |
|
|
|||||||||||||||||||||||||||||
WM8955LEFL Datasheet(HTML) 24 Page - Wolfson Microelectronics plc |
|
|
24 / 43 page  WM8955L Product Preview w Product Preview Rev 0.4 May2003 24 LOUT1/ROUT1 OUTPUTS The LOUT1 and ROUT1 pins can drive a 16 Ω or 32Ω headphone or a line output (see Headphone Output and Line Output sections, respectively). The signal volume on LOUT1 and ROUT1 can be independentlyadjusted under software control bywriting to LOUT1VOL and ROUT1VOL, respectively. Note that gains over 0dB may cause clipping if the signal is large. Any gain setting below 0101111 (minimum gain) mutes the output driver. The corresponding output pin remains at the same DC level (the reference voltage on the VREF pin), so that no click noise is produced when muting or un-muting. The analogue outputs have a zero cross detect feature to minimize audible clicks and zipper noise when on gain changes (i.e. the updating of the gain value is delayed until the signal passes through zero). Bydefault, this includes a time-out function, which forces the gain to update if no zero crossing occurs within a certain period of time. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION 6:0 LOUT1VOL 1111001 (0dB) LOUT1 Volume 1111111 = +6dB … (80 steps) 0110000 = -67dB 0101111 to 0000000 = Analogue MUTE 7 LO1ZC 0 LOUT1 zero cross enable 1 = Change gain on zero cross only 0 = Change gain immediately R2 (02h) LOUT1 Volume 8 LO1VU 0 Left Volume Update 0 = Store LOUT1VOL in intermediate latch (no gain change) 1 = Update left and right channel gains (left = LOUT1VOL, right = intermediate latch) 6:0 ROUT1VOL 1111001 ROUT1 Volume Similar to LOUT1VOL 7 RO1ZC 0 ROUT1 zero cross enable Similar to LO1ZC R3 (03h) ROUT1 Volume 8 RO1VU 0 Right Volume Update 0 = Store ROUT1VOL in intermediate latch (no gain change) 1 = Update left and right channel gains (left = intermediate latch, right = ROUT1VOL) R23 (17h) 0 TOEN 1 Time-out enable for zero-cross detectors 0 = time-out disabled (i.e. gains are never updated if there is no zero crossing) 1 = time-out enabled Table 14 LOUT1/ROUT1 Volume Control |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
British ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
