Pin Name Data direction Function
1 VRA-PLL Reference voltage of PLL analog power supply 1.8V
2 PLL AO PLL-FLT-RET.PLL external filtering loop
3 PLL-FLTM AO PLL negative input
4 PLL-FLTP AI PLL positive input
5 AVSS Analog ground
6 AVSS Analog ground
7 VRD-PLL Reference voltage of PLL digital power supply 1.8V
8 AVSS-PLL PLL analog ground
9 AVDD-PLL PLL3.3V power supply
10 VBGAP Bandwidth gap reference voltage
11 RESET DI TAS5508 reset signal
12 HP-SEL DI Headphone/microphone selection bit
13 PDN DI Power failure control bit
14 MUTE DI Mute control bit
15 DVDD Digital 3.3V power supply
16 DVSS Digital ground
17 VR-DPLL Reference voltage of digital PLL power supply 1.8V
18 OSC-CAP AO Oscillator capacitor connection end
19 XTL-OUT AO Clock signal output
20 XTL-IN AI Clock signal input
21 RESERVED Connect digital signal ground
22 RESERVED Connect digital signal ground
23 RESERVED Connect digital signal ground
24 SDA DI/DO Series control data input/output
25 SCL DI Series control clock
26 LRCLK DI Left/right audio control clock
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