參數(shù)資料
型號(hào)： AK4626A
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： High Performance Multi-channel Audio CODEC
中文描述： 高性能多通道音頻解碼器
文件頁數(shù)： 23/40頁
文件大?。?/td> 573K
代理商： AK4626A
ASAHI KASEI
[AK4626A]
MS0397-E-00
2005/06
- 23 -
Overflow Detection
The AK4626A has overflow detect function for analog input. Overflow detect function is enable if OVFE bit is set to “1”
at serial control mode. OVF pin goes to “H” if analog input of Lch or Rch overflows (more than -0.3dBFS). OVF output
for overflowed analog input has the same group delay as ADC (GD = 16/fs = 333
μ
s @fs=48kHz). OVF is “L” for 522/fs
(=11.8ms @fs=48kHz) after PDN = “
↑
”, and then overflow detection is enabled.
Zero Detection
The AK4626A has two pins for zero detect flag outputs. Channel grouping can be selected by DZFM3-0 bits if P/S = “L”
and DZFE = “L” (Table 11). DZF1 pin corresponds to the group 1 channels and DZF2 pin corresponds to the group 2
channels. However DZF2 pin becomes OVF pin if OVFE bit is set to “1”. Zero detection mode is set to mode 0 if DZFE=
“H” regardless of P/S pin. DZF1 is AND of all six channels and DZF2 is disabled (“L”) at mode 0. Table 12 shows the
relation of P/S, DZFE, OVFE and DZF.
When the input data of all channels in the group 1(group 2) are continuously zeros for 8192 LRCK cycles, DZF1(DZF2)
pin goes to “H”. DZF1(DZF2) pin immediately goes to “L” if input data of any channels in the group 1(group 2) is not
zero after going DZF1(DZF2) “H”.
DZFM
Mode
3
2
1
0
L1
R1
0
0
0
0
0
DZF1
DZF1
DZF1
1
0
0
0
1
DZF1
DZF1
DZF1
2
0
0
1
0
DZF1
DZF1
DZF1
3
0
0
1
1
DZF1
DZF1
DZF1
4
0
1
0
0
DZF1
DZF1
DZF2
5
0
1
0
1
DZF1
DZF2
DZF2
6
0
1
1
0
DZF2
DZF2
DZF2
7
0
1
1
1
disable (DZF1=DZF2 = “L”)
8
1
0
0
0
9
1
0
0
1
10
1
0
1
0
11
1
0
1
1
12
1
1
0
0
13
1
1
0
1
14
1
1
1
0
15
1
1
1
1
Table 11. Zero detect control
P/S pin
DZFE pin
OVFE bit
“L”
disable
“H” (parallel mode)
“H”
disable
“0”
“L”
“1”
“0”
“H”
“1”
Table 12. DZF1-2 pins outputs
AOUT
L2
R2
DZF1
DZF1
DZF1
DZF2
DZF2
DZF2
DZF2
L3
DZF1
DZF1
DZF2
DZF2
DZF2
DZF2
DZF2
R3
DZF1
DZF2
DZF2
DZF2
DZF2
DZF2
DZF2
Not Available
disable (DZF1=DZF2 = “L”)
Default
DZF mode
Mode 7
Mode 0
Selectable
Selectable
Mode 0
Mode 0
DZF1 pin
“L”
AND of 6ch
Selectable
Selectable
AND of 6ch
AND of 6ch
DZF2/OVF pin
“L”
“L”
Selectable
OVF output
“L”
OVF output
“L” (serial mode)
相關(guān)PDF資料
PDF描述
AK4626AVQ High Performance Multi-channel Audio CODEC
AK4628A High Performance Multi-channel Audio CODEC
AK4628AVQ High Performance Multi-channel Audio CODEC
AK4628 HIGH PERFORMANCE MULTI CHANNEL AUDIO CODEC
AK4628VQ HIGH PERFORMANCE MULTI CHANNEL AUDIO CODEC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4626AVQ 制造商:AKM 制造商全稱:AKM 功能描述:High Performance Multi-channel Audio CODEC
AK4627 制造商:AKM 制造商全稱:AKM 功能描述:High Performance Multi-channel Audio CODEC
AK4627VQ 制造商:AKM 制造商全稱:AKM 功能描述:High Performance Multi-channel Audio CODEC
AK4628 制造商:AKM 制造商全稱:AKM 功能描述:HIGH PERFORMANCE MULTI CHANNEL AUDIO CODEC
AK4628A 制造商:AKM 制造商全稱:AKM 功能描述:single chip CODEC that includes two channels of ADC and eight channels of DAC.
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