PC87382 Datasheet, PDF (46/72 Pages) National Semiconductor (TI) – LPC-to-LPC Switch for Docking Stations, with Fast Infrared Port, Serial Port and GPIOs

7.0 Legacy Functional Blocks
This chapter briefly describes the following blocks, which provide legacy device functions:
q _{Serial Port 1 (SP1)}
q _{Infrared (IR)}
The description of each Legacy block includes the sections listed below. For details on the general implementation of each
legacy block, see the SuperI/O Legacy Functional Blocks Datasheet.
q _{General Description}
q _{Register Map table(s)}
q _{Bitmap table(s)}
The register maps in this chapter use the following abbreviations for Type:
q _{R/W = Read/Write.}
q_R
= Read from a specific address returns the value of a specific register. Write to the same address is to a
different register.
q _{W = Write.}
q _{RO = Read Only.}
q _{R/W1C= Read/Write 1 to Clear. Writing 1 to a bit clears it to 0. Writing 0 has no effect.}
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