怎样理解配置文档中这些,谢谢大虾！

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怎样理解MTK配置文档中这些，谢谢大虾！
[AFC Control]
Initial value = 4000
Slope = 7
[AFC table]
MAX_INIT_AFC_DAC = 7000
MIN_INIT_AFC_DAC = 2000
MAX_AFC_SLOPE = 10.0
MIN_AFC_SLOPE = 2.0
……
TSC = 5
APC Delta = 0.10
Check APC Delta = 2.0