SM5846AP Datasheet, PDF (18/36 Pages) Nippon Precision Circuits Inc – Multi-function Digital Filter

SM5846AP
Control flag functions when MSD is HIGH
(default)
Other requests are controlled by internal flag only
because there is no corresponding input pin. These
control flags are valid when MDS is HIGH. The
default values are shown in the following table.
Flag name
FSEL2
FSEL1
MUTE
IBS2
IBS1
Default value
HIGH
HIGH
HIGH
LOW
HIGH
Default setting
44.1 kHz deemphasis filter
sampling frequency
Muting OFF
16-bit input data length
Clock Functions
Input clock frequency switching (CKS)
This switch is used to select the input clock fre-
quency—384fs or 512fs (normal-speed sampling),
and 192fs or 256fs (high-speed sampling).
CKS
LOW
HIGH
Input sampling frequency fs (kHz)
32
64
32
44.1
48
64
88.2
96
System clock
Frequency (MHz)
(× fs)
16.384
512fs
16.384
256fs
12.288
16.9344
384fs
18.432
12.288
16.9344
192fs
18.432
Crystal oscillator control switch (CKEN)
This switch is used to start/stop the crystal oscillator
circuit.
CKEN
HIGH
LOW
Crystal oscillator operation
Oscillating
Stopped
Notes
Normal-speed sampling mode
High-speed sampling mode
Normal-speed sampling mode
High-speed sampling mode
NIPPON PRECISION CIRCUITS—18