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LM4549B Scheda tecnica(PDF) 21 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Il numero della parte LM4549B
Spiegazioni elettronici  AC ??7 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound
PDF  28 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4549B Scheda tecnica(HTML) 21 Page - National Semiconductor (TI)

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AC Link Serial Interface Protocol
(Continued)
SLOT 3, INPUT FRAME (Continued)
Bits
Description
Comment
1:0
Reserved
Stuffed with "0"s by LM4549B
SDATA_IN: Slot 4 – PCM Record Right Channel
This slot contains sampled data from the right channel of the
stereo ADC. The signal to be digitized is selected using the
Record Select register (1Ah) and subsequently routed
through the Record Select Mux and the Record Gain ampli-
fier to the ADC.
This is a 20-bit slot and the digitized 18-bit PCM data is
transmitted in an MSB justified format. The remaining 2
LSBs are stuffed with zeros.
SLOT 4, INPUT FRAME
Bits
Description
Comment
19:2
PCM Record
Right Channel
data
18-bit PCM sample from right
ADC
1:0
Reserved
Stuffed with "0"s by LM4549B
SDATA_IN: Slots 5 to 12 – Reserved
Slots 5 – 12 of the AC Link Input Frame are not used for data
by the LM4549B and are always stuffed with zeros.
www.national.com
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