MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 602

• 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

Message Digest Hardware Accelerator (MDHA)
28.4.2.1 Generation of Key with IPAD
28.4.2.2 Generation of Key with OPAD
28-16
1. Reset the MDHA using the MDCMR[SWR] bit.
2. MDCR register write. Enable the interrupts. (optional)
3. MDMR register write. Select algorithm, IPAD, and MD initialization.
4. The data FIFO is filled with the key.
5. MDDSR register write. Load this register with the length of the key (without padding) in
6. MDHA does the required IPAD of key.
7. MDHA does the required algorithm’s auto padding of message.
8. Set the MDCMR[GO] bit.
9. Wait for MDSR[INT] to be set or done interrupt to be triggered to indicate successful
10. If MDSR[DONE] is set or done interrupt is triggered, then read the message digest and the
1. Reset the MDHA using the MDCMR[SWR] bit.
2. MDCR register write. Enable the interrupts. (optional)
3. MDMR register write. Select algorithm, OPAD, and MD initialization.
4. The data FIFO is filled with the key.
5. MDDSR register write. Load this register with the length of the key (without padding) in
6. MDHA does the required OPAD of key.
7. MDHA does the required algorithm’s auto padding of message.
8. Set the MDCMR[GO] bit.
9. Wait for MDSR[INT] to be set or done interrupt to be triggered to indicate successful
bytes.
completion (or failure).
message digest count from the message digest registers.
bytes.
completion (or failure).
You will need to provide a time-out feature in your interrupt handler.
The MDHA will stall with no response if it is waiting for message
data. This will most likely occur if the MDDSR write is not received
or auto-padding is disabled and a partial message block is provided.
MCF5235 Reference Manual, Rev. 2
NOTE
Freescale Semiconductor