MPC8536-RDK Freescale Semiconductor, MPC8536-RDK Datasheet - Page 449

• Manufacturer Part Number: MPC8536-RDK
• Description: BOARD REF COMEXPRESS MPC8536
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536-RDK

• Contents: CSB1880, CSB1801, Cables, Documentation, Enclosure, Power Supply with cord
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.3
The host processor maintains a record of current secure sessions and the corresponding keys and contexts
of those sessions. Once the host has determined that a security operation is required, it creates a
“descriptor” containing all the information the SEC needs to perform the security operation. The host
creates the descriptor in main memory, then writes a pointer to the descriptor into the fetch FIFO of one of
the SEC channels. The channel uses this pointer to read the descriptor into its descriptor buffer. Once it
obtains the descriptor, the SEC uses its bus mastering capability to obtain inputs and write results, thus
offloading data movement and encryption operations from the host processor.
Descriptors are only used in channel-controlled accesses to SEC, and not in host-controlled accesses. For
more information about host-controlled access, see
Freescale Semiconductor
1
2
Byte Address Offset
0x3_F800–0x3_FFFF
Byte accessibility is controlled by internal logic, particularly at FIFOs, to prevent unintended overwrites of partial words
during writes, and to prevent unintended duplicate reads of partial data during reads. In addition, these bytes must be
presented on the correct byte lanes for the intended destination.
For the EU FIFOs, write operations anywhere in the address range enqueue to the input FIFO, and read operations
anywhere in the address range dequeue from the output FIFO. See the referenced section for more detailed
information.
(AD 17–0)
0x3_F000
0x3_F008
0x3_F010
0x3_F018
0x3_F020
0x3_F028
0x3_F030
0x3_F038
0x3_F040
0x3_F050
0x3_F108
0x3_F400
Descriptors
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
Module
CRCU
Table 10-3. SEC Address Map (continued)
Mode register
Key size register
Data size register
Reset control register
Control
Status register
Interrupt status register
Interrupt mask register
ICV size register
End of message register
Context register
Key register
Input FIFO
Register
Section 10.5.1.1, “Host-Controlled
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
R
1
Write
word
word
word
word
word
word
word
word
word
byte
byte
byte
by
—
10.7.3.11/1010-106
10.7.3.12/1010-106
10.7.3.13/1010-108
10.7.3.14/1010-108
10.7.3.4/1010-100
10.7.3.5/1010-100
10.7.3.6/1010-101
10.7.3.7/1010-101
10.7.3.8/1010-102
10.7.3.9/1010-104
10.7.3.2/1010-98
10.7.3.3/1010-99
10.7.1.9/1010-67
Security Engine (SEC) 3.0
Reference
Access”.
10-19