AD1849_15 Datasheet, PDF (14/28 Pages) Analog Devices – Serial-Port 16-Bit SoundPort Stereo Codec

AD1849K
Data Mode Data and Control Registers
Data Byte 1, Left Audio Data—Most Significant 8 Bits
Data 7
Data 6
Data 5
Data 4
L15
L14
L13
L12
63
62
61
60
Data 3
L11
59
Data 2
L10
58
Data 1
L9
57
Data 0
L8
56
In 16-bit linear PCM mode, this byte contains the upper eight bits of the left audio data sample. In the 8-bit companded and linear
modes, this byte contains the left audio data sample. In mono mode, only the left audio data is used. MSB first format is used in all
modes, and twos-complement coding is used in 16-bit linear PCM mode.
Data Byte 2, Left Audio Data—Least Significant 8 Bits
Data 7
L7
55
Data 6
L6
54
Data 5
L5
53
Data 4
L4
52
Data 3
L3
51`
Data 2
L2
50
Data 1
L1
49
Data 0
L0
48
E _{In 16-bit linear PCM mode, this byte contains the lower eight bits of the left audio data sample. In the 8-bit companded and linear}
modes, this byte is ignored on input, zeroed on output. In mono mode, only the left audio data is used. MSB first format is used in
all modes, and twos-complement coding is used in 16-bit linear PCM mode.
T _{Data Byte 3, Right Audio Data—Most Significant 8 Bits}
Data 7
E _R15
47
Data 6
R14
46
Data 5
R13
45
Data 4
R12
44
Data 3
R11
43
Data 2
R10
42
Data 1
R9
41
Data 0
R8
40
L _{In 16-bit linear PCM mode, this byte contains the upper eight bits of the right audio data sample. In the 8-bit companded and linear}
modes, this byte contains the right audio data sample. In mono mode, this byte is ignored on input, zeroed on output. MSB first
format is used in all modes, and twos complement coding is used in 16-bit linear PCM mode.
Data Byte 4, Right Audio Data—Least Significant 8 Bits
O _{Data 7}
R7
S ₃₉
Data 6
R6
38
Data 5
R5
37
Data 4
R4
36
Data 3
R3
35
Data 2
R2
34
Data 1
R1
33
Data 0
R0
32
In 16-bit linear PCM mode, this byte contains the lower eight bits of the right audio data sample. In the 8-bit companded and linear
B ^{modes, this byte is not used. In mono mode, this byte is ignored on input, zeroed on output. MSB first format is used in all modes,}
and twos-complement coding is used in 16-bit linear PCM mode.
Data Byte 5, Output Setting Register 1
O ^{Data 7}
Data 6
Data 5
Data 4
Data 3
Data 2
Data 1
Data 0
OM1
OM0
LO5
LO4
LO3
LO2
LO1
LO0
31
30
29
28
27
26
25
24
OM1
OM0
LO5:0
Output Line 1 Analog Mute:
0
Mute Line 1
1
Line 1 on
Output Line 0 Analog Mute:
0
Mute Line 0
1
Line 0 on
Output attenuation setting for the left DAC channel; “0” represents no attenuation. Step size is 1.5 dB; “62” represents
93 dB of attenuation. Attenuation = 1.5 dB × LO, except for LO = “63,” which represents full digital mute.
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REV. A