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PCM1608Y/2K Datasheet(PDF) 16 Page - Texas Instruments

Part # PCM1608Y/2K
Description  24-Bit, 192kHz Sampling, 8-Channel, Enhanced Multilevel, Delta-Sigma DIGITAL-TO-ANALOG CONVERTER
PDF  29 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PCM1608Y/2K Datasheet(HTML) 16 Page - Texas Instruments

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PCM1608
16
SBAS164A
REGISTER DEFINITIONS
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Register 1
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT17
AT16
AT15
AT14
AT13
AT12
AT11
AT10
Register 2
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT27
AT26
AT25
AT24
AT23
AT22
AT21
AT20
Register 3
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT37
AT36
AT35
AT34
AT33
AT32
AT31
AT30
Register 4
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT47
AT46
AT45
AT44
AT43
AT42
AT41
AT40
Register 5
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT57
AT56
AT55
AT54
AT53
AT52
AT51
AT50
Register 6
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT67
AT66
AT65
AT64
AT63
AT62
AT61
AT60
Register 7
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT77
AT76
AT75
AT74
AT73
AT72
AT71
AT70
Register 8
R/W
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AT87
AT86
AT85
AT84
AT83
AT82
AT81
AT80
R/W
Read/Write Mode Select
When R/W = 0, a write operation is performed.
When R/W = 1, a read operation is performed.
Default Value: 0
ATx[7:0]
Digital Attenuation Level Setting
where x = 1 through 8, corresponding to the DAC output VOUTx.
These bits are Read/Write.
Default Value: 1111 1111B
Each DAC output, VOUT1 through VOUT8, has a digital attenuator associated with it. The attenuator may be
set from 0dB to –63dB, in 0.5dB steps. Changes in attenuator levels are made by incrementing or
decrementing, by one step (0.5dB), for every 8/fS time interval until the programmed attenuator setting is
reached. Alternatively, the attenuator may be set to infinite attenuation (or mute).
The attenuation level may be set using the formula below.
Attenuation Level (dB) = 0.5 (ATx[7:0]DEC – 255)
where: ATx[7:0]DEC = 0 through 255
for: ATx[7:0]DEC = 0 through 128, the attenuator is set to infinite attenuation.
The following table shows attenuator levels for various settings.
ATx[7:0]
Decimal Value
Attenuator Level Setting
1111 1111B
255
0dB, No Attenuation (default)
1111 1110B
254
–0.5dB
1111 1101B
253
–1.0dB
••
•
••
•
••
•
1000 0010B
130
–62.5dB
1000 0001B
129
–63.0dB
1000 0000B
128
Mute
••
•
••
•
••
•
0000 0000B
0
Mute



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