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XN62Lxxx<br />

Table 5-28: <br />

(SYSOSCCTRL, 0x4004 8020) <br />

<br />

0 BYPASS 0<br />

0 <br />

1 <br />

PLL (sys_osc_clk) XTALIN<br />

<br />

1 FREQRANGE 0<br />

0 0.4 - 3MHz <br />

1 3 - 16MHz <br />

31:2 - 0x00<br />

5.6.2.3 <br />

<br />

<br />

<br />

clkana)<br />

(F<br />

clkana)<br />

WDT_CLK (F<br />

clkana) FRWQSEL 320KHz 2.2MHz<br />

<br />

DIVSEL <br />

WDT_CLK<br />

<br />

WDT_CLK = F clkana/(4 × (1 + DIVSEL)) = 1.25K Hz ~ 550K Hz ().<br />

: FREQSEL F clkana ±<br />

20% <br />

<br />

IRC <br />

:<br />

Table 5-29: (WDTOSCCTRL,<br />

0x4004 8024) <br />

<br />

4:0 DIVSEL F clkana <br />

0x0<br />

8:5 FREQSEL <br />

(F clkana). 0x0<br />

0x1<br />

0x2<br />

0x3<br />

0x4<br />

0x5<br />

0x6<br />

0x7<br />

0x8<br />

0x9<br />

0xA<br />

0xB<br />

0xC<br />

0xD<br />

0xE<br />

0xF<br />

0.32Hz<br />

0.6MHz<br />

0.85MHz<br />

1.04MHz<br />

1.16MHz<br />

1.28MHz<br />

1.43MHz<br />

1.52MHz<br />

1.63MHz<br />

1.7MHz<br />

1.8MHz<br />

1.92MHz<br />

2MHz<br />

2.08MHz<br />

2.2MHz<br />

38 www.xinnovatech.com

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