HH
VS1005 VSOS A
UDIO
S
UBSYSTEM
VS1005g
7.3
Analog Side Path Audio Drivers
7.3.1
Driver AUOOSET.DL3
DAOSET_LEFT
DAOSET_RIGHT
DAC_LEFT
DAC_RIGHT
I2S_LEFT
I2S_RIGHT
SP_LDATA
SP_RDATA
24
24
24
24
24
24
24
24
24
DAC_VOL
32/16
SRC_CF
DAC +
output
drivers
I2S_CF
Analog
I2S_BCK,I2S_FRM
I2S_DO
SRC_LEFT
SRC_RIGHT
CBUF
RIGHT
LEFT
DAOSET_CF
DAC_SRC
Digital
SPDIF_OUT
encoder
S/PDIF
24/16
sample rate
upconverter
upconverter
Sample rate
with filters
and hold
Sample
Filterless
down−
converter
RED text: Pin
BLUE text: Register
Figure 4: AUOOSET.DL3 signal paths shown in
bold brown
Figure 4 shows the VS1005 analog output audio side path. This audio path is not filtered;
it is only put through a Sample and hold upconverter. As such, audible aliasing distortion
may be heard if low sample rates are used. This audio path is best suitable for different
kinds of alarm and effects sounds that may easily be independently overlayed on top of
the audio of the main audio path (see Chapter 7.2.1).
The sample rate of the side audio path is independent from the main audio path. While
it may be set to up to 192 kHz, all sample rates cannot be set accurately. While cer-
tain sample rates like 24, 48, and 96 kHz can be played accurately, some others, like
44.1 kHz, may have an up to 150 Hz error. While not a problem for effects sounds, this
may make accurate timing difficult.
Rev. 3.57
2019-04-10
Page
