HD64F3670 Datasheet, PDF (295/323 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

Internal data bus
PMR
PDR
PCR
SCI3
TxD
Legend
PMR: Port mode register
PDR: Port data register
PCR: Port control register
Figure B.5 Port 2 Block Diagram (P22)
Rev. 2.0, 03/02, page 271 of 298