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29.5 Initialization/Application Information
29.5.1 Initializing a chip-select
To initialize a chip-select:
1. Write to the associated CSAR.
2. Write to the associated CSCR.
3. Write to the associated CSMR, including writing 1b to the Valid field (CSMRn[V]).
29.5.2 Reconfiguring a chip-select
To reconfigure a previously-used chip-select:
1. Invalidate the chip-select by writing 0b to the associated CSMR's Valid field
(CSMRn[V]).
2. Write to the associated CSAR.
3. Write to the associated CSCR.
4. Write to the associated CSMR, including writing 1b to the Valid field (CSMRn[V]).
Initialization/Application Information
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
688
Preliminary
Freescale Semiconductor, Inc.
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