參數(shù)資料
型號(hào): AK4648EC
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/HP/SPK-AMP
中文描述: 立體聲編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 67/119頁
文件大小: 1272K
代理商: AK4648EC
[AK4648]
MS0625-E-01
2007/06
- 67 -
Full-differential Mono Line Output (LOP/LON pins)
When LODIF bit = “1”, LOUT/ROUT pins become LOP/LON pins, respectively. Lch/Rch signal of DAC or
LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 is output from the LOP/LON pins which is full-differential as (L+R)/2 signal. The
load impedance is 10k
Ω
(min.) for LOP and LON pins, respectively. When the PMLO bit = “0”, the mono line output
enters power-down mode and the output is Hi-Z. When the PMLO bit is “1” and LOPS bit is “1”, mono line output enters
power-save mode. Pop noise at power-up/down can be reduced by changing PMLO bit at LOPS bit = “0”. When PMLO
bit = “1” and LOPS bit = “0”, mono line output enters in normal operation. LOVL bit set the gain of mono line output.
When L4DIF=LODIF bits = “1”, full-differential output signal is as follows: (LOP)
(LON) = (IN4+)
(IN4
).
DAC
DACL bit
LOP pin
LON pin
LOVL bit
Figure 48. Mono Line Output
PMLO
0
LOPS
x
1
0
Mode
LOP
Hi-Z
Hi-Z
LON
Hi-Z
VCOM
(default)
Power-down
Power-save
Normal Operation
1
Normal Operation
Normal Operation
Table 56. Mono Line Output Mode Setting (x: Don’t care)
LOVL
0
1
Gain
+6dB
+8dB
Output Voltage (typ.)
1.2 x AVDD
1.5 x AVDD
(default)
Table 57. Mono Line Output Volume Setting
PMLO bit
LOPS bit
LOP pin
LON pin
VCOM
VCOM
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Figure 49. Power-up/Power-down Timing for Mono Line Output
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