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PCM1602 데이터시트(PDF) 23 Page - Texas Instruments

부품명 PCM1602
상세설명  24-Bit, 192kHz Sampling, 6-Channel, Enhanced Multilevel, Delta-Sigma DIGITAL-TO-ANALOG CONVERTER
PDF  29 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

PCM1602 데이터시트(HTML) 23 Page - Texas Instruments

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PCM1602
23
SBAS163
ZERO FLAG
Zero Detect Condition
Zero Detection for each output channel is independent from
the others. If the data for a given channel remains at a “0”
level for 1024 sample periods (or LRCK clock periods), a
Zero Detect condition exists for that channel.
Zero Output Flags
Given that a Zero Detect condition exists for one or more
channels, the Zero Flag pins for those channels will be set to
a logic “1” state. There are Zero Flag pins for each channel,
ZERO1 through ZERO6 (pins 1 through 6). In addition, all six
Zero Flags are logically “AND”ed together, and the result
provided at the ZEROA pin (pin 48), which is set to a logic “1”
state when all channels indicate a Zero Detect condition. The
Zero Flag pins can be used to operate external mute circuits,
or used as status indicators for a microcontroller, audio signal
processor, or other digitally controlled functions.
The active polarity of zero flag output can be inverted by
setting the ZREV bit of Control Register 10 to “1”. The reset
default is active high output, or ZREV = 0.
APPLICATIONS INFORMATION
CONNECTION DIAGRAMS
A basic connection diagram with the necessary power-supply
bypassing and decoupling components is shown in Figure 12.
Texas Instruments recommends using the component values
shown in Figure 12 for all designs.
FIGURE 12. Basic Connection Diagram.
24
23
22
21
20
19
18
17
16
15
14
13
37
38
39
40
41
42
43
44
45
46
47
48
RST
SCKI
SCKO
BCK
LRCK
TEST
V
DD
DGND
DATA1
DATA2
DATA3
AGND3
V
CC4
AGND4
NC
AGND6
V
CC5
AGND5
NC
V
COM
V
OUT1
36
35
34
33
32
31
30
29
28
27
26
123456789
10
11
25
12
PCM1602
Micro Controller
+5V
Power Supply
10
µF
10
µF
10
µF
ZERO1–6
Regulator
LPF
LPF
LPF
LPF
LPF
LPF
V
CC3
V
OUT2
V
OUT1
V
OUT2
V
OUT3
V
OUT4
V
OUT5
V
OUT6
ZEROA
ZEROA
PLL1700
ML
MC
MD
SCKO3
RST
LRCK
DATA1
DATA2
DATA3
BCK



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