mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 620

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Initialization/Application Information
27.5.2 Automatic Seeding
The intended general operation of the RNGB with automatic seeding enabled is as
follows:
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10. Repeat steps 4–9.
3. Write to RNG_CMD to run self-test or seed generation.
4. Wait for interrupt to indicate completion of the requested operation(s).
5. Repeat steps 3–4 if seed generation is not complete.
6. Poll RNG_SR for FIFO level.
7. Read available random data from output FIFO.
8. Repeat steps 6 and 7 as needed, until 2
9. Write to RNG_CMD to run seed mode.
1. Reset/initialize.
2. Write to the RNG_CR to setup the RNGB for automatic seeding and the desired
3. Wait for interrupt to indicate completion of first seed
4. Poll RNG_SR for FIFO level.
5. Read available random data from output FIFO.
6. Repeat steps 4 and 5 as needed. Automatic seeding occurs when necessary and is
functionality.
transparent to operation.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
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Freescale Semiconductor, Inc.