MC68HC812A4 Datasheet, PDF (43/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

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Section 2. Register Block
2.1 Contents
2.2 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
2.3 Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
2.4 Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
2.2 Overview
The register block can be mapped to any 2-Kbyte boundary within the
standard 64-Kbyte address space by manipulating bits REG15–REG11
in the INITRG register. INITRG establishes the upper five bits of the
register block’s 16-bit address.
The register block occupies the first 512 bytes of the 2-Kbyte block.
Figure 2-1 shows the default addressing.
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MOTOROLA
Register Block
MC68HC812A4 — Rev. 3.0
43