sm5841 Nippon Precision Circuits Inc, (NPC), sm5841 Datasheet - Page 13
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sm5841
Manufacturer Part Number
sm5841
Description
Audio Multi-function Digital Filter
Manufacturer
Nippon Precision Circuits Inc, (NPC)
Datasheet
1.SM5841.pdf
(20 pages)
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Audio Data Input (DIN, BCKI, LRCI)
The input data is in 16/18-bit serial, 2s complement,
MSB first format.
Serial input data on DIN is clocked into an SIPO
(serial in, parallel out) register on the rising edge of
the BCKI bit clock, and then converted to parallel
data.
SIPO output data is transferred into the left and
right-channel input registers on the falling edge and
rising edge, respectively, of the LRCI clock.
DIN
BCKI
LRCI
Lch
MSB
Figure 3. Audio data input timing
16 / 18bit
SM5841H
1/fs
LSB
The internal arithmetic operation and output circuit
timing is independent of the input timing. Accord-
ingly, phase differences between LRCI, BCKI and
CKI do not affect device operation, and any jitter in
the data input clock does not cause jitter in the output
clock.
Note that the device should be reset if either or both
of the LRCI and CKI clocks stop. If the device is not
reset, even though the clocks are low frequency,
incorrect circuit operation may occur, generating
unwanted output noise.
Rch
MSB
NIPPON PRECISION CIRCUITS—13
16 / 18bit
LSB