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LMX2594: MX2594 no assist 状态下 读 R110, R111,R112,

Part Number: LMX2594

Register read back

(1) R110, rb_VCO_SEL

(2) R111, rb_VCO_CAPCTRL

(3) R112, rb_VCO_DACISET

当LMX2594芯片输出信号fout锁定之后,读取R110回来的信息与dataset的内容和TICS Pro出现矛盾(注:除了寄存器R110、R111和R112之外,读取其他寄存器值与写入寄存器的值是一致,所以可以排除读取协议问题)

a.  例如:在no assist 状态下,配置fpd=200MHz,fout=1014.344MHz,OUT_ISET=0;当信号锁定时,读取R110(0X6E),得到实际返回值是0628 ,而按照dataset和TICS Pro,理论返回值是 0402,请问为什么出现这种情况?

b.  每一次给LMX2594芯片重新上电,读取R112都不一样,例如将LMX2594配置上述一样,返回值出现014E和013C;而R110和R111返回的值不会变,这是为什么只有R112会变