1 miso (master in/slave out), 2 mosi (master out/slave in), 3 spsck (serial clock) – Freescale Semiconductor MC68HC908MR32 User Manual
Page 209: 4 ss (slave select), Miso (master in/slave out), Mosi (master out/slave in), Spsck (serial clock), Ss (slave select)
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