SM5879 View Datasheet(PDF) - Nippon Precision Circuits
Part Name
Description
MFG CO.
'SM5879' PDF : 20 Pages View PDF
SM5879AV
Deemphasis filter
The built-in deemphasis filter in the SM5879AV
operates at fs = 44.1 kHz.
Table 5.
Parallel setting pin name
Microcontroller setting
flag
DEEM
FDEM
H
L
Deemphasis mode
ON
OFF
Soft Mute
With parallel setting (when P/M is HIGH), soft mute
can be activated by the MUTE pin level setting using
the built-in attenuation counter. When muting is acti-
vated, MUTE is HIGH.
When soft mute is activated, the attenuation counter
operates and lowers gain in 128 steps.
The time until mute is activated is approximately
1024/fs ≈ 23.2 msec. The time required to release
muting is the same.
MUTE
0dB
(Gain)
−∞
1024/fs
1024/fs
Figure 6. Example of soft mute operation
NIPPON PRECISION CIRCUITS—16
Share Link: 
