with sound , VREF=2.740V
-----------------------

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 00 00 09 00 00 15 f0 00 00 00 40 10 00 00 04 00    ..?..??...@?..?.
10: 51 80 00 00 00 00 00 00 40 00 40 00 00 00 00 10    Q?......@.@....?
20: 02 03 04 05 06 27 00 00 20 30 30 30 04 65 66 67    ?????'.. 000?efg
30: 00 00 00 00 40 c0 00 20 00 00 00 00 00 00 50 00    ....@?. ......P.
40: 80 20 11 54 00 00 00 00 00 00 00 00 2e 0c 00 00    ? ?T.........?..
50: 04 00 f0 f0 f0 04 00 f0 f0 f0 00 f0 f0 f0 00 f0    ?.????.???.???.?
60: f0 f0 00 00 20 20 20 c8 b0 c8 b0 20 20 20 c8 c0    ??..   ????   ??
70: c8 c0 18 98 00 00 0c e0 40 0c f0 00 c0 10 f6 00    ????..??@??.???.
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 00 00 00 00 00 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    ................

no sound  VREF=2.740V
------------------------

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: 00 00 09 00 00 15 f0 00 00 00 40 10 00 00 04 00    ..?..??...@?..?.
10: 51 80 00 00 00 00 00 00 40 00 40 00 00 00 00 10    Q?......@.@....?
20: 02 03 04 05 06 27 00 00 20 30 30 30 04 65 66 67    ?????'.. 000?efg
30: 00 00 00 00 40 c0 00 20 00 00 00 00 00 00 00 00    ....@?. ........
40: 00 00 11 5c 00 00 00 00 00 00 00 00 2e 0c 00 00    ..?\.........?..
50: 04 00 f0 f0 f0 04 00 f0 f0 f0 00 f0 f0 f0 00 f0    ?.????.???.???.?
60: f0 f0 00 00 20 20 20 c8 b0 c8 b0 20 20 20 c8 c0    ??..   ????   ??
70: c8 c0 18 98 00 00 0c e0 40 00 c0 00 c0 10 0a 00    ????..??@.?.???.
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
e0: 00 00 00 00 00 00 00 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    ................