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MOS
CS9255
FM/AM
1、
:CS9255CP
CS9255 /, MCU , ,。CS9255 MCU , MCU 、、FM/AM , ,MCU ,CS9255 。:
● FM :150MHz ● AM :30MHz ● 32.768kHz ● :2.0V~5.5V ● , ● , ● , MCU ● :DIP8
2、
2. 1、
FM AM
OSCI OSCO
6
MUX
Count0 Count1 Count2 Count3 Count4 Count5 Count6 10 10 10 10 10 10 10
4 44 44
ENABLE
RESET
(5x4)
20
(21)
DIS_OUT FMAM_SEL
TEST TESTCLK
DATA DCLK
2. 2、 MCU (ENABLE),。CS9255 :
●FM/AM FM 0.06s;AM 0.1s。 ,;,。 FM Count6 Count5 Count4 Count3 Count2 Count1 Count0 FM 100MHz 10MHz 1MHz 100kHz 10kHz 1kHz 100Hz
:2008-08-B
1 5
MOS
CS9255
AM AM
Count6 10MHz
Count5 1MHz
Count4 100kHz
Count3 10kHz
Count2 1kHz
Count1 100Hz
Count0 10Hz
● ,,。
● Tset_da=256×T ( f =32.768kHz,Tset_da=7.68ms), , , , 。
● T (T=T +0.