This SP03 doesn't seems to be one, it is only a 7bits device for which the writer of the document mentioned 0xC4 address in "already-shifted" manner ... it is mentioned few lines later that reading register is at 0xC5, which means the R/W bit is already OR-ed. So, the real address of (0xC4 >> 1) is 0x62 (in an "unshifted" manner).
This SP03 doesn't seems to be one, it is only a 7bits device for which the writer of the document mentioned 0xC4 address in "already-shifted" manner ... it is mentioned few lines later that reading register is at 0xC5, which means the R/W bit is already OR-ed. So, the real address of (0xC4 >> 1) is 0x62 (in an "unshifted" manner).