There are 2 SCI in S12ZVC. I assigned the RXD0/TXD0 but I can not assign another TXD1/RXD1.
Please look at MODRR0 Routing Register.
SCI0 have these routing options: TXD0 on PJ1; RXD0 on PJ0 as default(0) OR TXD0 on PS1; RXD0 on PS0 as non default (1) SCI1 have these routing options: TXD1 on PS5; RXD1 on PS4 as default(0) OR TXD1 on PT1; RXD1 on PT0 as non default (1)
So, you can use two SCI ports (both as non-default routing option) in case of 48LQFP package.
I hope it helps.
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