AD1837 Analog Devices, AD1837 Datasheet - Page 20

• Manufacturer Part Number: AD1837
• Description: 2 ADC, 8DAC 96 Khz, 24-Bit Sigma Delta Codec
• Manufacturer: Analog Devices

AD1837
Address
15, 14, 13, 12
0010 = DACL1
0011 = DACR1
0100 = DACL2
0101 = DACR2
0110 = DACL3
0111 = DACR3
1000 = DACL4
1001 = DACR4
Address
15, 14, 13, 12
1100
dress
15, 14, 13, 12
1101
Address
15, 14, 13, 12 11
1110
Table VI. DAC Volume Control
R/W
RES RES Reserved Clocking Scaling
0
R/W
RES
11
0
R/W
11
0
R/W
11
0
10
0
RES
10
0
RES
10
0
9, 8
0, 0
RES
10
0
PRELIMINARY TECHNICAL DATA
Master/Slave
Aux Mode
9
0 = Slave
1 = Master
DAC Volume
9, 8, 7, 6, 5, 4, 3, 2, 1, 0
0000000000 = 1/1024
0000000001 = 2/1024
0000000010 = 3/1024
1111111110 = 1022/1024
1111111111 = 1023/1024
IMCLK
7, 6
00 = MCLK
01 = MCLK
10 = MCLK
11 = MCLK
FUNCTION
Dither
9
0 = Disabled
1 = Enabled
ADC
Data Format
8, 7, 6
000 = I
001 = RJ
010 = DSP
011 = LJ
100 = Packed 256
101 = Reserved
110 = Auxiliary 256
111 = Auxiliary 512
Table VIII. ADC Control I
Table IX. ADC Control II
Table X. ADC Control III
2/3
2
2
2
S
Filter
8
0 = All Pass
1 = High-Pass
ADC
Peak Readback
5
0 = Disabled Peak Readback 000 = Normal Mode 00 = Normal Mode
1 = Enabled Peak Readback
–20–
FUNCTION
Address
15, 14, 13, 12
0010 = Left ADC
1011 = Right ADC
ADC Data
Word Width
5, 4
00 = 24 Bits
01 = 20 Bits
10 = 16 Bits
11 = Reserved
FUNCTION
FUNCTION
ADC
Power Down
7
0 = Normal
1 = Power-Down
R/W RES Six Data Bits
11
1
Table VII. ADC Peak
DAC
Test Mode
4, 3, 2
All others reserved
Reserved
3, 2
0, 0
10
0
9, 8, 7, 6, 5, 4
000000 = 0.0 dBFS
000001 = –1.0 dBFS
000010 = –2.0 dBFS
111111 = –63.0 dBFS
Sample
Rate
6
0 = 48 kHz
1 = 96 kHz
FUNCTION
Right
1
0 = On
1 = Mute
ADC MUTE
ADC
Test Mode
1, 0
All others reserved
0, 0, 0, 0, 0, 0
Reserved
5, 4, 3, 2, 1, 0
0, 0, 0, 0, 0, 0
REV. PrA
Four Fixed
Bits
3, 2, 1, 0
0000
These
four bits
are always
zero
Left
0
0 = On
1 = Mute
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