CXD1199AQ
3-1-11. ATV (attenuation value) register 2
3-1-12. ATV (attenuation value) register 3
The attenuation values are set in these registers.
ATV0
ATV2
L
ATV3
ATV1
ADPCM
DF
DECODER
R
Setting 81HEX or higher into these registers is prohibited. When bits 7 to 0 of these registers are “b7” to
“b0”, the attenuation (dB) of the attenuator is as follows:
Attenuation=20 log (b7 × 20 + b6 × 2–1 + b5 × 2–2 + b4 × 2–3 + b3 × 2–4 + b2 × 2–5 + b1 × 2–6 + b0 × 2–7)
The relationship expressed in the above formula and ATV register settings is given in the following table.
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SONY [ SONY CORPORATION ]
