MC68HC11KW1 Datasheet, PDF (80/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

4.5.5.2 GPCS1C — General-purpose chip select 1 control register
Address bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
Gen. purpose chip select 1 con. (GPCS1C) $005D G1DG2 G1DPC G1POL G1AV G1SZA G1SZB G1SZC G1SZD 0000 0000
G1DG2 — General-purpose chip select 1 drives general-purpose chip select 2
4
1 (set) – CSGP1 and CSGP2 are OR’ed and driven out CSGP2.
0 (clear) – CSGP1 does not affect CSGP2.
G1DPC — General-purpose chip select 1 drives program chip select
1 (set) – CSGP1 and CSPROG are OR’ed and driven out CSPROG.
0 (clear) – CSGP1 does not affect CSPROG.
G1POL — General-purpose chip select 1 polarity select
1 (set) – CSGP1 active high.
0 (clear) – CSGP1 active low.
G1AV — General-purpose chip select 1 address valid select
1 (set) – CSGP1 is valid during address valid time.
0 (clear) – CSGP1 is valid during E high time.
G1SZA–G1SZD — GP chip select 1 size
These bits select the size for general-purpose chip select 1. Refer to Table 4-15.
4-36
OPERATING MODES AND ON-CHIP MEMORY
MC68HC11KW1