AD1986A 데이터 시트보기 (PDF) - Analog Devices
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AD1986A Datasheet PDF : 56 Pages
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AD1986A
Table 29. ADI Specific Verb Support
Payload
Verb
SDI Select
G/S VID Description
Get 0xF04 N/A (0)
Response
BIt (32 Bits)
N/A (0)
Processing
Coefficient
Set 0x704 N/A (0)
Get C--0x N/A (0)
8 N/A (0)
Coefficient
Coefficient
Index
Set 4--x
Get D--0x
Coefficient
N/A (0)
16 N/A (0)
Coefficient
Index
Processing
State
Set 5--0x Coefficient Index 8
Get 0xF03 N/A (0)
N/A (0)
Processing
State
Set 0x703 Processing State 8 N/A (0)
Description
The AD1986A has only a single SDI line, thus set SDI verbs are
ignored and get SDI verbs always return a 0.
Get/set the processing coefficient at the current coefficient index.
Index can be set by the “set coefficient index” verb.
The coefficient indexes and data are identical to the AC’ 97 Registers
0x60 and 0x62 definitions (see the EQ Control Register (Register
0X60) and EQ Data Register (Register 0X62) sections).
Note that the AD1986A does not automatically increment the
coefficient index. The index must be written for each coefficient that
is to be loaded or read.
Get/set the processing coefficient index for the get/set Processing
Coefficient verb. The coefficient indexes and data are identical to the
AC’ 97 register 0x60 and 0x62 definitions. (see the EQ Control
Register (Register 0X60) and EQ Data Register (Register 0X62)
sections). Note that the AD1986A does not automatically increment
the coefficient index. The index must be written for each coefficient
that is to be loaded or read.
Processing states supported by the AD1986 Digital EQ:
Value
Processing
(EQM Bit [Inversed])
Symmetry (SYM Bit)
0x00
Off
On
0x01
Benign
On
0x02
Benign
On
0x80
Off
Off
0x81
Benign
Off
0x82
Benign
Off
Note that the AD1986A considers states on and benign as both
benign. If the on state is set, the AD1986 will set and return the
benign state. States 0x00 or 0x80 must be set when loading
coefficients. Setting state 0x80 will load coefficients with SYM off.
Default state 0x00 is SYM on. When symmetry is on, only ½ of the
coefficients (one channel) need to be loaded.
Table 30. Surround DAC Audio Output
NID Name
0x04 Surround DAC Audio Output
TID Type
0x0 Audio Output
Description
Designates the surround channel DACs.
Table 31. ADI Specific Verb Support
Payload
Verb
SDI
Select
G/S VID Description Bit
Get 0xF04 N/A (0)
Set 0x704x N/A (0)
8
Response
(32 Bits)
N/A (0)
N/A (0)
Description
The AD1986 has a only single SDI line, thus set SDI verbs are ignored
and get SDI verbs always return a 0.
Rev. 0 | Page 15 of 56
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