MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 632

• Manufacturer Part Number: MOD5234-100IR
• Description: MOD5234 10/100 ETHERNET MODULE
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5234-100IR

• Interface: I²C, SPI, UART
• Voltage - Supply: 2.5V
• Mounting Type: Surface Mount
• Package / Case: Module
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Format: -
• Baud Rates: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4483564

Symmetric Key Hardware Accelerator (SKHA)
30.4.2 Operation with Context Switch
The intended operation to process part of one message, followed by an intermediate message, and
resume processing the original message is as follows:
30-20
9. Wait for interrupt, SKSR[INT].
10. Unload processed message data from the output FIFO.
11. Read contents of context registers, if necessary.
12. Set the SKCMR[CI] bit, to clear the done interrupt.
1. Reset/initialize.
2. Set algorithm, set processing direction and cipher mode in the SKMR.
3. Write IV/Nonce to SKCRn registers.
4. Write the symmetric key to SKKDRn registers.
5. Write the number of bytes in the key to SKKSR.
6. Set number of bits in the first part of message 1 in the SKDSR.
7. Load the input FIFO with first part of message 1.
8. Set the SKCMR[GO] bit.
9. Wait for done interrupt, SKSR[DONE].
10. Unload processed message data from the output FIFO.
11. Read context registers and store contents in memory.
12. Set the SKCMR[CI] bit, to clear the done interrupt.
13. Reset/initialize.
14. Process intermediate message as described in
15. Reset/initialize.
16. Set algorithm, processing direction and cipher mode in the SKMR.
17. Restore context registers from memory.
18. Restore symmetric key to SKKDRn.
19. Write number of bytes in the key to the SKKSR.
20. Set number of bits in remaining part of message 1 to SKDSR.
21. Load the input FIFO with the remaining portion of message 1.
22. Set the SKCMR[GO] bit.
23. Wait for interrupt, SKSR[INT].
24. Unload processed message data from the output FIFO.
MCF5235 Reference Manual, Rev. 2
Section 30.4.1, “General Operation.”
Freescale Semiconductor