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RM46L852: Difference between "Hercules RM46x MCU HDK" and the RM46 datasheet - pin J14 (VCC)

Michael Jensen44
Prodigy 90 points
Part Number: RM46L852

The schematic for the "Hercules RM46x MCU HDK" has pin J14 implemented as a VCCPLL2 pin (sheet10, B4 ) whereas the datasheet specifies it as a core VCC (Table 4-49)
Which is correct ?

If J14 is a core VCC pin then the implementation in the RM46x MCU HDK shorts the VCCPLL pins to the CORE_VCC thereby removing the VCCPLL power filtering !

  • 0
    TI__Guru**** 196346 points
    Hi Michael,

    You are right, J14 on RM46x is VCC. RM46x HDK shares the same schematics with another device which has VCCPLL1 (P11) and VCCPLL2 (J14). We added 1 EMI filter to PLL power supply (VCCPLL) on HDK. You can remove the EMIF filter on J14 in your application.