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ad1955 how to set register

Question asked by stephen.feng on Jun 13, 2013
Latest reply on Jun 21, 2013 by ColemanR

debug ad1955

1. sample rate & de-emphasis & mclk how to set? 192 vs 512, 48/96/44.1/176.4 vs 256? or 192 vs 128?

192khz reg_1 256fs/512fs/768fs, but no 64fs/128fs/192fs.

the dac device work good at 44.1/48/96/176.4/192k all work, but ad1955 some time is very hot.

2. reg_0 de-emphasis, reg_1 zero flag polarity, how to use, I have not set it.

 

thx!

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PCM Mode

Allowable Master Clock Frequencies (   f

S)Nominal Input

Interpolation Mode

64 96 128 192 256 384 512 768

Sample Rate (kHz)

48 kHz (INT 8×) Mode •••32, 44.1, 48

96 kHz (INT 4×) Mode ••• 88.2, 96

192 kHz (INT  2×) Mode ••• 176.4, 192

External Filter Mode

Allowable Master Clock Frequencies (   f

S)Nominal Input Sample Rate

Input Sample Rate

64 96 128 192 256 384 512 768

(to External Filter) (kHz)

8  ×  f

S

•••32, 44.1, 48

4  ×  f

S

••• 88.2, 96

2  ×  f

S

••• 176.4, 192

 

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