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CS2000-CP 数据表(PDF) 16 Page - Cirrus Logic |
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CS2000-CP 数据表(HTML) 16 Page - Cirrus Logic |
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16 / 37 page ![]() CS2000-CP 16 DS761F3 output will resume. If it is expected that CLK_IN will be removed and then reapplied within 223 SysClk cycles but later than tCS, the ClkSkipEn bit should be disabled. If it is not disabled, the device will behave as shown in Figure 14; note that the lower figure shows that the PLL output frequency may change and be incorrect without an indication of an unlock condition. Figure 13. CLK_IN removed for > 223 SysClk cycles CLK_IN PLL_OUT UNLOCK ClkSkipEn=0 or 1 ClkOutUnl=0 Lock Time CLK_IN PLL_OUT UNLOCK ClkSkipEn=0 or 1 ClkOutUnl=1 Lock Time = invalid clocks 223 SysClk cycles 223 SysClk cycles CLK_IN PLL_OUT UNLOCK ClkSkipEn=0 or 1 ClkOutUnl=0 Lock Time CLK_IN PLL_OUT UNLOCK ClkSkipEn=0 or 1 ClkOutUnl=1 Lock Time tCS tCS = invalid clocks CLK_IN PLL_OUT UNLOCK ClkSkipEn= 1 ClkOutUnl= 0 or 1 Lock Time tCS = invalid clocks 223 SysClk cycles 223 SysClk cycles 223 SysClk cycles Figure 14. CLK_IN removed for < 223 SysClk cycles but > tCS |
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