Hello
Our customer used TLV320ADC3101 and configured the sample rate 96Khz. MCLK is provided by BCLK, but the data he read has some duplicated.
Below is his configuration:
bclk=3.072M
fS= (PLLCLK_IN × K × R) / (NADC × MADC × AOSR × P)
K=J.D
J=4 D=0 R=8 NADC = 8 MADC=2 P=1 AOSR = 64
fs=(3072 x 4 x 8)/(8 x 2 x 64 x P)
96k = 98304k/(8 x 2 x 64 x P)
Code example:
page0
0x04, 0x07 /*CODEC_CLKIN = BCLK ,PLL_CLKIN = BCLK*/
0x05, 0x98 /*set PLL P = 1 and R = 8*/
0x06, 0x04 /*set J = 4*/
0x07, 0x0
0x08, 0x0 /*PLL fractional multiplier D = 0*/
0x12, 0x88 /*NADC clock divider = 8*/
0x13, 0x82 /*MADC clock divider = 2*/
0x14, 0x40 /*AOSR = 64*/
0x1b, 0x01 /*I2S,ADC interface word length = 16 bits,BCLK,WCLK input,3-stating of DOUT:enabled*/
0x3d, 0x01 /*Select ADC Signal Processing Block PRB_R1*/
page1
0x34, 0xfc, 0},/*IN1L(P) 0-dB setting*/
0x37, 0xfc, 0},/*IN1R(M) 0-dB setting*/
page 0
0x51, 0xc2, 0},/**/
0x52, 0x00, 0},/**/
And we found that there are some duplicated data as following:
5322 5322 5322 -32768 -32768 -26243 -26243 -26243 -5172 -5172 4625 4625 9806 9806 9806 -2718 -2718 1476 1476 1476 -13843 -13843 9306 9306 9306 16057 16057 1377 1377 1377 -29465 -29465 -1590 -1590 -1590 13742 13742 21994 21994 21994 -19998 -19998 -724 -724 -724 22194 22194 -8052 -8052 -8052 32767 32767 9988 9988 -16093 -16093 -16093 26320 26320 -6267 -6267 -6267 -4834 -4834 -15141 -15141 -15141 -17980 -17980 10103 10103 10103 -13740 -13740 -6637 -6637 -6637 -24282 -24282 -5849 -5849 -5849 -13055 -13055 -11141 -11141 -11141 -5464 -5464 -8610 -8610 6714 6714 6714 9199 9199 22897 22897 22897 12017 12017 12954 12954 12954 -10848 -10848 30372 30372 30372 30348 30348 -26632 -26632 -26632 16936 16936 10371 10371 10371 1755 1755 29328 29328 29328 -32768 -32768 -26960 -26960 -26960 1880 1880 32767 32767 25869 25869 25869 4643 4643 20890 20890 20890 -4249 -4249 -8137 -8137 -8137 -18531 -18531 16169 16169 16169 14846 14846 -32768 -32768 -32768 -17206 -17206 4224 4224 4224 -32768 -32768 4631 4631 4631 13527 13527 -32768 -32768 17773 17773 17773 21872 21872 -21556 -21556 -21556 -29300 -29300 -32768 -32768 -32768 -5837 -5837 -17023 -17023 -17023 -8090 -8090
Best regards
Kailyn
