Texas Instruments DEM-DSD1791, Руководство пользователя, Страница: 10 / 28

Block Diagram
1-2
1.1 Block Diagram
Figure 1−1. DEM−PCM/DSD1791/1793 Block Diagram
DAC
PCM1791
PCM1793
DSD1791
DSD1793
BAL Amp
with LPF
5534
S/PDIF
COAX IN
DAI
CS8414
Logic
Interface
CN001
S/PDIF
OPT IN
Lch OUT
3.3 V REG
SW001
Register Control MODE Control
SW001~SW004
DEM-AS/VDAC Daughter Card
AGND +5 V
Analog
+5 V
Digital
CN003
CN058
MODE Control
BAL Amp
with LPF
5534
Rch OUT
AGND DGND –15 V +15 V
1.2 Connections
The DEM-PCM/DSD1791/1793 can be operated by connecting
±
15-V and 5-V
power supplies and the S/PDIF interface.
-
CN051 AVCC : 9 V to 15 V Icc = 20 mA, typical
-
CN052 GND (analog)
-
CN053 AVCC− : –9 V to –15 V Icc = 20 mA, typical
-
CN054 VCC : 4.5 V to 5.5 V Icc = 80 mA, typical
(CN058 shorted, default)
-
CN055 GND (analog)
-
CN056 VCC : 4.5 V to 5.5 V
-
CN057 GND (digital)
-
CN001 RCA jack : S/PDIF coax input
-
U001 TORX : S/PDIF optical input
The S/PDIF interface accepts up to f
s
= 96 kHz sampling rate, f
s
= 192 kHz,
24-bit PCM data and 64 f
s
, 1-bit DSD data can be connected directly on
interface connector. A stereo audio signal can be obtained by connecting RCA
audio cables to the onboard RCA stereo jacks, CN103 and CN104.