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Audio Data Interface
1-4
Table 1−2. Audio Interface Format Selection
FMT2
PIN 28
FMT1
PIN 27
FMT0
PIN 26
FORMAT
L
L
L
16-bit standard format, right-justified
L
L
H
20-bit standard format, right-justified
L
H
L
24-bit standard format, right-justified
L
H
H
24-bit MSB-first, left-justified format
H
L
L
16-bit l
2
S format
H
L
H
24-bit l
2
S format
H
H
L
Reserved
H
H
H
Reserved
Switches FMT0, FMT1, and FMT2 select the audio interface format for the
PCM1793. The interface formats are listed in Table 1−2.
Table 1−3. De-Emphasis Control
DEMP1
PIN 25
DEMP0
PIN 24
De-Emphasis Function
L
L
Disabled
L
H
48 kHz
H
L
44.1 kHz
H
H
32 kHz
Switches DEMP0 and DEMP1 select the sampling frequency for which
de-emphasis filtering is performed. The available frequencies are listed in
Table 1−3.
1.4
Audio Data Interface
CN001 on the daughter card selects the data interface. Available choices are
DSD by device type and PCM. The default setting is for the PCM audio data
interface with S/PDIF. The DSD interface can also be connected directly to this
connector.
P-SCLK
MUTE
P-DATA
P-BCK
P-LRCK
DBCK
DSD-R
DSD-L
(DSD)
(DSD)
Содержание DEM-DSD1791
Страница 1: ...November 2003 Audio Converter Products Digital Audio User s Guide SLEU038...
Страница 15: ...Demonstration Software 1 7 Description Top Menu Attenuation Window Operation Window Function Window...
Страница 18: ...1 10...
Страница 21: ...DEM DAI ASDAC Printed Circuit Board 2 3 Schematics and Printed Circuit Boards Figure 2 2 DEM DAI ASDAC Top View...
Страница 22: ...DEM DAI ASDAC Printed Circuit Board 2 4 Figure 2 3 DEM DAI ASDAC Bottom View...
Страница 24: ...DEM AS VDAC Printed Circuit Board 2 6 Figure 2 6 DEM AS VDAC Bottom View...