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參數(shù)資料
| 型號： | AK4544AVQ |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | CABLE ASSEMBLY; BNC MALE TO N MALE; 50 OHM, RG223/U COAX, DOUBLE SHIELDED; 36" CABLE LENGTH |
| 中文描述： | AC97多媒體音頻編解碼器與SRC |
| 文件頁數(shù)： | 17/35頁 |
| 文件大小： | 381K |
| 代理商： | AK4544AVQ |
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[ASAHI KASEI] [AK4544A]
<MS0026-E-00> - 17 -
b)
Slot1
Audio input frame slot1’s stream echoes the control register index, for historical reference, for the data to be returned in slot2.
(Assuming that slots1 valid bit and slot2 valid bit in the slot0 had been tagged “valid” by the AK4544A)
Status Address Port
Bit15
“1/0”
“1/0”
Bit14
Bit16
Bit17
Bit18
Bit19
Status Address Port
Slot 2
Slot 0
Slot 1
SDATA_IN
BIT_CLK
“1/0” “1/0”
“1/0
“0”
“1/0”
“0”
“1/0”
Bit8
Bit9
Bit10
Bit12
Bit11
Bit13
“1/0” “1/0” “1/0”
“1/0
Bit7
“1/0”
“1/0”
Bit1
Bit5
Bit6
Bit2
Bit3
Bit4
Bit0
Bit19
“0”
“0”
“0”
“0”
“0”
This address shows register index for which data is being returned in the slot2.
This address port is the copy of slot1 of the output frame, and index address input to SDATA_OUT is looped back to
the AC’97 controller through SDATA_IN even for non-supported register.
For “On Demand” base data transaction, when the DAC sampling rate is set less than 48kHz, then AK 4544A will
request new audio data as required by setting the SLOTREQ bits 11 and 10 ( or bits 8 and 5, or bits 7 and 6) in Slot1
to 0’s. When no data is required to support the selected sampling rate, these bits will be 1’s. When SLOTREQ bits are
asserted as “send data request” during the current frame on SDATA_IN, AC’97 digital controller should send data
onto the corresponding slot in the next frame on SDATA_OUT.
If VRA is set “0”, SLOTREQ bits show always “0” and sample rate is forced to 48ksps.
SLOTREQ Bit
19
18 – 12
11
Description
Reserved ( Set to “0” )
Control Register Index ( Set to “0”s if tagged invalid )
Slot 3 Request : PCM Left channel for Codec ID=0:0 or 0:1
“0”: send data request, “1”: do not send
Slot 4 Request : PCM Right channel for Codec ID=0:0 or 0:1
“0”: send data request, “1”: do not send
Reserved ( Set to “0” )
Slot 6 Request : PCM Left channel for Codec ID=1:1
“0”: send data request, “1”: do not send
Slot 7 Request : PCM Left channel for Codec ID=1:0
“0”: send data request, “1”: do not send
Slot 8 Request : PCM Right channel for Codec ID=1:0
“0”: send data request, “1”: do not send
Slot 9 Request : PCM Right channel for Codec ID=1:1
“0”: send data request, “1”: do not send
Reserved ( Set to “0” )
10
9
7
6
5
4 – 0
c)Slot2: Status Data Port
Status data addressed by command address port of Output Stream is output through SDATA_IN pin.
Bit19:4
Control Register Read Data (the contents of indexed address in the slot 1)
Bit3:0
“0”
Note that the address of Status Data Port data are consistent with Status Address Port data of the slot 1
in the
same frame
. If the read operation is issued in the frame N by AC’97 controller, Status Data Port data is output
through SDATA_IN in the frame N+1.
Note that data is output in only this frame, only one time and that
the
following frames are invalid if the next read operation is not issued.
d)Slot3
Record(ADC) data format is MSB first. Data format is 2’s complement. As the resolution of the AK4544A is 18bit,
lower 2 bits are ignored. If ADC block is powered down, slot-3 valid bit in the slot 0 is invalid (“0”), and data is
output as all “0”.
PCM Record Left Channel
Bit19:2
Bit1:0
Audio ADC left channel output
“0”
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4544 | AC97 MULTIMEDIA AUDIO CODEC WITH SRC |
| AK4545 | AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4545VQ | AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4551 | LOW POWER & SMALL PACKAGE 20BIT CODEC |
| AK4551VT | LOW POWER & SMALL PACKAGE 20BIT CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4545 | 制造商:AKM 制造商全稱:AKM 功能描述:AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4545VQ | 制造商:AKM 制造商全稱:AKM 功能描述:AC97 AUDIO CODEC WITH SRC AND DIT |
| AK4550 | 制造商:AKM 制造商全稱:AKM 功能描述:EVALUATION BOARD REV.C FOR AK4550 |
| AK4550VT | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER & SMALL PACKAGE 16BIT CODEC |
| AK4550VT-E2 | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: |
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