參數(shù)資料
型號(hào)： AD1843JST
廠商： ANALOG DEVICES INC
元件分類： 消費(fèi)家電
英文描述： Serial-Port 16-Bit SoundComm Codec
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： PLASTIC, TQFP-100
文件頁(yè)數(shù)： 22/64頁(yè)
文件大?。?/td> 848K
代理商： AD1843JST
REV. 0
–22–
AD1843
SERIAL INTERFACE INPUT
Note that the references to slot numbers are valid only when the AD1843 is configured in master mode. For slave mode, bus owner-
ship does not necessarily start on Slot 0.
Control Word Input (Slot 0 or 16)
Data 15
Data 14
Data 13
Data 12
Data 11
Data 10
Data 9
Data 8
res
res
res
res
res
res
DA2V
DA1V
Data 7
Data 6
Data 5
Data 4
Data 3
Data 2
Data 1
Data 0
R/W
res
res
IA4
IA3
IA2
IA1
IA0
DA2V
DAC2 Input Valid Flag. When in DAC2 stereo mode, setting this bit to “1” indicates that slots 4 and 5
contain valid playback data for the left and right channels of DAC2, respectively. When in DAC2 mono
mode, setting this bit to “1” indicates that slot 4 contains valid playback data for both left and right channels
of DAC2. Slot 5 is ignored in DAC2 mono mode. When this bit is reset to “0,” data in slots 4 and 5 is
ignored. This bit is ignored if the AD1843 did not request data for DAC2 in the last frame (see the DA2RQ
bit in the Status Word Output).
DAC1 Input Valid Flag. When in DAC1 stereo mode, setting this bit to “1” indicates that slots 2 and 3
contain valid playback data for the left and right channels of DAC1, respectively. When in DAC1 mono
mode, setting this bit to “1” indicates that slot 2 contains valid playback data for both left and right channels
of DAC1. Slot 3 is ignored in DAC1 mono mode. When this bit is reset to “0,” data in slots 2 and 3 is
ignored. This bit is ignored if the AD1843 did not request data for DAC1 in the last frame (see the DA1RQ
bit in the Status Word Output).
Read/Write Request. Either a read from or a write to a Control Register occurs every frame. Setting this bit
to “1” indicates a Control Register read while resetting this bit to “0” initiates a Control Register write. Bits
IA4:0 define the Control Register address. When reading, the contents of the Control Register addressed are
transmitted during slot 1 of the following frame. When writing, the data to be written is taken from slot 1
and the former contents of the Control Register are transmitted during slot 1 of the following frame.
Control Register address for read or write.
Reserved for future expansion. To ensure future compatibility, write “0” to all reserved bits.
DA1V
R/W
IA4:0
res
Control Register Write Data Input (Slot 1 or 17)
Data 15
Data 14
Data 13
Data 12
Data 11
Data 10
Data 9
Data 8
DATA15
DATA14
DATA13
DATA12
DATA11
DATA10
DATA9
DATA8
Data 7
Data 6
Data 5
Data 4
Data 3
Data 2
Data 1
Data 0
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
Format for the input data to written to the addressed Control Register. MSB is first.
DAC1 Left Sample Input (Slot 2 or 18)
Data 15
Data 14
Data 13
Data 12
Data 11
Data 10
Data 9
Data 8
DATA15
DATA14
DATA13
DATA12
DATA11
DATA10
DATA9
DATA8
Data 7
Data 6
Data 5
Data 4
Data 3
Data 2
Data 1
Data 0
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
Data format may be 8-bit unsigned linear PCM, 16-bit signed linear PCM, 8-bit
μ
-Law companded, or 8-bit A-Law companded.
MSB is first. DATA7:0 are ignored in 8-bit linear or 8-bit companded modes.
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