NTP3000 View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'NTP3000' PDF : 37 Pages View PDF
Power Integrated Processor for Digital Amplifier
NTP3000
SDATA
(input)
X X X X X X X X L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 X X X X X X X X L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0
MSB
LSB
MSB
LSB
Register 1R=eg0is0t0er0100=00100:0R11ig0h1t :jusRtiigfihetdju, sMtifSieBd, fMirSstB, 2fir4sbt,i2t 4bit
SDATA
(input)
SDATA
(input)
SDATA
(input)
X X X X X X X X X X X X L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 X X X X X X X X X X X X L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L17 L18 L19
LSB
MSB
LSB
MSB
Register 1R=eg0i0st0e0r 011=10100: 0R1i0g1h1t j:usRtiifgiehtdj,usLtSifiBed,firLsStB, 2fi0rsbt,it20bit
L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 X X X X X X X X L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 X X X X X X X X
LSB
MSB
LSB
MSB
Register 1 = 00000010 : Left justified, LSB first, 24bit
Register 1 = 00001110 : Left justified, LSB first, 24bit
L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 X X X X X X X X L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0 X X X X X X X X
MSB
LSB
MSB
LSB
RegisterR1eg=is0te0r010=00000000:11L0e0ft :jusLteifftiejuds,tiMfieSd,BMfSirBstf,ir2st4, b2i4tbit
Figure 11 General serial audio data formats
7. Mixer
Channel mixer can be used in lots of application needs like bass management, subwoofer signal
generation, pseudo stereo, etc. Mixer cross-connects two input channels to three output channels. Mixer
can control both gain and polarity of each channel input. Step size of mixer gain change is also variable
according to the gain level as shown below.
Table 4 Variable step mixing gain
Volume Range(dB) Step(dB)
+18 ~ + 6
1
+5.5 ~ -5.5
0.5
-6 ~ -32
1
< -32
-∞
In total, 6 mixing gain coefficients denoted as M00, M01, M10,…, M21 are defined as shown in the
equation below. Each Mxx stores volume value in dB scale, and the number values versus gain in dB are
shown in the appendix. There are some places in the mixing matrix that are considered as trivial
connections and thus predefined as -∞ dB.
[Output Channels] = [Mixer Matrix] x [Input Channels]
CH1 OUT
CH2 OUT
CH3 OUT
=
M00 M01
M10 M11
M20 M21
. CH1 IN
CH2 IN
Figure 12 Mixer matrix
Copyright © NeoFidelity, Inc. 2005
Preliminary datasheet – NeoFidelity reserves the right to change specifications at any time without prior notice
11
R0.73-11.2006
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