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You have module Clock_Generator.v
- N/ W3 ?1 O S) v! i' q7 R3 s$ _with port input [31:0] key_value
6 [( C* t9 }" `8 T3 Oand you set a instance of & }* B1 I, d6 C! h
key_scan_jitter key_scan_jitter_inst
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.clk(clk),/ ]3 w4 N O) r9 V3 t& ^! q# I( K
.rst_n(rst_n),
+ ]# H6 F/ B) j6 t. S .key_data(key_data),0 K+ `! O# F g& ^* D
.key_flag(key_flag),: m9 M+ Y0 H/ u7 o, C8 i
.key_value(key_value)
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In module key_scan_jitter.v- A$ F1 M% E7 _% ~) J4 F. b
you have output[31:0] key_value
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So module have to source of key_value:
3 ?, C& z3 } X+ M5 c# ^5 g: [1. From input port (may be 32 pins of chip)
7 x) T& _( A5 h$ ?2. From internal instance key_scan_jitter * X# o% B% @6 e7 T" O% j
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Altera can-t to do short circuit in your module.
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