4 order pll simulation using matlab

hungda50310

最近想使用matlab模擬PLL的behavior，

但block接好後，卻無法模擬，出現下面error
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+ P' n9 v& o7 q4 x' e-------------------------------------------------------
At time 1.654088834175351e-009, simulation hits (1000) consecutive zero
$ {8 C2 k0 K3 B7 s7 F& `) G) Zcrossings. Consecutive zero crossings will slow down the simulation or cause
; ~; H: P$ F' }- Y7 [3 ?: kthe simulation to hang. To continue the simulation, you may 1) Try using
9 G6 S' ~6 K( b2 M" P! C9 W7 ~Adaptive zero-crossing detection algorithm or 2) Disable the zero crossing of
the blocks shown in the following table.
# {- N' U! Z7 d" y) r1 B  Z8 `! x& @----------------------------------------------------------
+ N; d$ k! o5 i: ]1 N
請問大家這問題該如何解?

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