Adapter Card LMX2487E EVM USB2ANY Q1 Your mentioned Table 3 is snau137a page 35 ? I followed that, and got DATA/CLOCK/LE seems correctly. http://www.tij.co.jp/jp/lit/ug/snau137a/snau137a.pdf CLK=8 DATA=4 LE =2 CE=10 ENOSC=7 TRIGGER=1
Regardless of here, Ftest/LD stays low C3:C0= 1001 (REG4) DATA CLOCK LE Ftest/LD ( stay low…..) I change here to “Logic High” but Ftest/LD stays low
Q2 Is there any sequence ( order ) to program register R4 ? For example, R4 should be programmed after R0~R3 were programmed…? For example, Power OFF(CE=L) and power ON to reset all registers..? Otherwise I doubt my LMX2487E EVM may broken…
Our ( customer’s) goal is to have Q3 Our ( customer’s) goal is to have Fin_RF=450MHz input (1/384) RF_N/2 divider output 1.17MHz to Ftest/LD pin. (Before they had been used MB15F72UL(Fujitsu) but its EOL, so customer design using LMX2485E now) We have no LMX2485E EVM so, evaluating LMX2487E EVM and we will replace it to LMX2485E. I believe above is achieved for LMX2485E,but would you please confirm again? If yes , which is better to select RF_P= 0 or RF_P=1, both of RF_P=0 or 1 is Okay ?? 1.17MHz 450MHz