参数资料
型号: LC890561W
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: 7 X 7 MM, SQFP-48
文件页数: 3/47页
文件大小: 357K
代理商: LC890561W
LC890561W
No8226-11/47
9. Built-in Regulator (VREF)
It has built-in regulator that can step down 3.3V to 1.8V in order to supply voltage into logic part.
VREF is pin for voltage smoothing which can output regulator and connects the capacity as shown below.
C0
C1
10
F
0.1
F
Figure 9.1 Composition of the regulator output
10. Analog Source Mode
The analog source mode is entered under the following conditions.
When the analog source mode is selected with the SMOD command.
When the input pin selected for data demodulation is no signal.
In the analog source mode, the oscillation amplifier clock or the externally supplied clock are used.
Each signal in the analog source mode is described below.
VCO holds the status of free-run oscillation when SMOD is set and also when no signal is input.
ERROR pin outputs high and DATAO pin outputs SDIN input data.
XSTATE pin outputs high after about 512*LRCK(fs) (LRCK=48kHz or 96kHz) counts after XSTATE pin outputs low.
The clock set with XADC command is output from XMCK.
The output of BCK and LRCK are as follows.
Table 10.1 BCK and LRCK Outputs with Analog Source
XIN pin
BCK pin
LRCK pin
12.288MHz
3.072MHz
48kHz
24.576MHz
6.144MHz
96kHz
12MHz to 25MHz
XIN/4
XIN/256
VREF
C0
C1
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