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WM8980 Datasheet(PDF) 4 Page - Wolfson Microelectronics plc |
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WM8980 Datasheet(HTML) 4 Page - Wolfson Microelectronics plc |
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4 / 81 page  WM8980 Product Preview w PP Rev 1.6 January 2005 4 PIN DESCRIPTION PIN NAME TYPE DESCRIPTION 1 L2/GPIO2 Analogue input Left channel line input/secondary mic pre-amp positive input/GPIO pin 2 RIP Analogue input Right Mic Pre-amp positive input 3 RIN Analogue input Right Mic Pre-amp negative input 4 R2/GPIO3 Analogue input Right channel line input/secondary mic pre-amp positive input/GPIO pin 5 VBGND Supply Video buffer ground pin 6 VBIN Analogue input Video buffer signal input 7 VBREF Analogue output Video buffer reference resistor pin 8 VBOUT Analogue output Video buffer output 9 VBVDD Supply Video buffer analogue supply 10 NC Not internally connected 11 LRC Digital Input / Output DAC and ADC Sample Rate Clock 12 BCLK Digital Input / Output Digital Audio Port Clock 13 ADCDAT Digital Output ADC Digital Audio Data Output 14 DACDAT Digital Input DAC Digital Audio Data Input 15 MCLK Digital Input Master Clock Input 16 DGND Supply Digital ground 17 DCVDD Supply Digital core logic supply 18 DBVDD Supply Digital buffer (I/O) supply 19 CSB/GPIO1 Digital Input / Output 3-Wire MPU Chip Select / General purpose input/output 1 20 SCLK Digital Input 3-Wire MPU Clock Input / 2-Wire MPU Clock Input 21 SDIN Digital Input / Output 3-Wire MPU Data Input / 2-Wire MPU Data Input 22 MODE Digital Input Control Interface Selection 23 GPIO4 Digital input/output General purpose input/output 4 24 NC Not internally connected 25 AUXL Analogue input Left Auxillary input 26 AUXR Analogue input Right Auxillary input 27 OUT4 Analogue Output Buffered midrail Headphone pseudo-ground, or Right line output or MONO mix output 28 OUT3 Analogue Output Buffered midrail Headphone pseudo-ground, or Left line output 29 ROUT2 Analogue Output Second right output, or BTL speaker driver negative output 30 SPKGND Supply Speaker ground (feeds speaker amp and OUT3/OUT4) 31 LOUT2 Analogue Output Second left output, or BTL speaker driver positive output 32 SPKVDD Supply Speaker supply (feed speaker amp only) 33 VMID Reference Decoupling for ADC and DAC reference voltage 34 AGND Supply Analogue ground (feeds ADC and DAC) 35 ROUT1 Analogue Output Headphone Output Right 36 LOUT1 Analogue Output Headphone Output Left 37 AVDD Supply Analogue supply (feeds ADC and DAC) 38 MICBIAS Analogue Output Microphone Bias 39 LIP Analogue input Left Mic Pre-amp positive input 40 LIN Analogue input Left Mic Pre-amp negative input Note: It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB. |
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