工具/软件:
播放1KHz 单声源时、编解码器输出波形如下。 请帮助我了解原因。 谢谢你。
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工具/软件:
播放1KHz 单声源时、编解码器输出波形如下。 请帮助我了解原因。 谢谢你。
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 00 00 00 91 20 1e 00 0a 00 20 00 01 00 00 00 20 ...? ?.?. .?... 10: 20 ff ff 00 78 78 00 78 78 06 00 fe 00 00 fe 00 ...xx.xx?.?..?. 20: 00 00 00 00 00 c0 00 00 40 00 00 0a 0a 2f 2f af .....?..@..??//? 30: 00 00 00 0f 2f 2f af 00 00 00 0f 00 00 00 2f 2f ...?//?...?...// 40: af 0f 00 00 00 2f 2f af 0f 2f 2f af 2f 2f af 0b ??...//??//?//?? 50: 2f 2f af 00 00 00 0b 00 00 00 2f 2f af 0b fe 0c //?...?...//???? 60: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?......... 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80: 00 00 00 91 20 1e 00 0a 00 20 00 01 00 00 00 20 ...? ?.?. .?... 90: 20 ff ff 00 78 78 00 78 78 06 00 fe 00 00 fe 00 ...xx.xx?.?..?. a0: 00 00 00 00 00 c0 00 00 40 00 00 0a 0a 2f 2f af .....?..@..??//? b0: 00 00 00 0f 2f 2f af 00 00 00 0f 00 00 00 2f 2f ...?//?...?...// c0: af 0f 00 00 00 2f 2f af 0f 2f 2f af 2f 2f af 0b ??...//??//?//?? d0: 2f 2f af 00 00 00 0b 00 00 00 2f 2f af 0b fe 0c //?...?...//???? e0: 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00 ......?......... f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
您好、
我看了一下寄存器转储、没有看到任何明显的错误。 您能否说明测量此输出的位置以及发送给器件的输入信号? 您能解释一下问题是什么吗?
此致、
Mir
作为参考、此处对 reg dump 进行了注释:
03 91 #PLL enabled, q=2, p=1 04 20 #J = 8 05 1e #111 1000 0000 = D= 1920 07 0a #left dac plays left channel data, right dac plays right channel data 09 20 #i2s mode, 24 bits 0b 01 #r=1 0f 20 #left adc pga is not muted, gain=16dB 10 20 #right adc pga is not muted, gain=16dB 11 ff #mic2l is not connected, mic2r/line2r not connected to left adc pga 12 ff #lic2l/line2l, mic2r/line2r is not connected to right adc pga 15 78 #mic1rp/line1rp is single ended mode, line1r is not connectred to left adc pga 16 00 #mic1rp/line1rp is single ended mode, level control gain =0dB, line1r is conected to right adc pga, powered down 18 78 #mic1lp/line1lp is single ended mode, line1l is not connected to right adc pga 19 06 #micbias output powered down 1a 00 #agc disabled 1b fe #default max gain for l agc 1e fe #default max gain for r agc 25 c0 #left and right dac powered up 28 40 #output common mode voltage = 1.5V 2b 0a #left dac channel not muted, gain = -5dB 2c 0a #right dac chanel not muted, gain = -5dB 2d 2f #reserved 2e 2f #pga_L not routed to hplout 2f af #DAC_L1 is routed to HPLOUT, volume control = 010 1111 33 0f #HPLOUT level control=0dB,not muted, fully powered up 35 2f #PGA_L is not routed to HPLCOM 36 af #DAC_L1 is routed to HPLCOM, volume ctrl = 010 1111 3a 0f #HPLCOM level control = 0dB, not muted, fully powered up 3f 2f #PGA_R is not routed to HPROUT 40 af #DAC_R1 is routed to HPROUT, volume ctrl = 010 1111 41 0f #HPROUT level = 0dB, not muted, fully powered up 46 2f #PGA_R is not routed to HPRCOM 47 af #DAC_R1 is routed to HPRCOM, volume control = 010 1111 48 0f #HPRCOM level = 0dB, not muted, fully powered up 51 2f #PGA_L not routed to left lop/m 52 af #DAC_L1 is routed to LEFT_LOP/M, volume control = 010 1111 56 0b #left_lop/m output level = 0dB, not muted, fully powered up 5b 2f #pga_r not routed to right lop/m 5c af #DAC_R1 is routed to right_lop/m, volume control = 010 1111 5d 0b #RIGHT_LOP/M level = 0dB, not muted, fully powered up 5e fe #l+r dac fully powered up, l+r lop/m fully powered up, hpl/hprout fully powered up 5f 0c #hpl+hprcom fully powered up