MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 646
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MPC8313ECZQADDC
Manufacturer Part Number
MPC8313ECZQADDC
Description
Microprocessors - MPU 8313 REV2.2 PB ENC EXT
Manufacturer
Freescale Semiconductor
Datasheet
1.MPC8313CZQADDC.pdf
(1214 pages)
Specifications of MPC8313ECZQADDC
Processor Series
MPC8313E
Core
e300
Data Bus Width
16 bit
Maximum Clock Frequency
133 MHz
Program Memory Size
16 KB
Data Ram Size
16 KB
Interface Type
I2C
Mounting Style
SMD/SMT
Package / Case
PBGA
Number Of Programmable I/os
32
Number Of Timers
4
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Security Engine (SEC) 2.2
Each descriptor contains eight long-words (64 bits each), consisting of the following:
Upon completion of the current descriptor, the channel checks the next entry in its fetch FIFO, and, if
non-zero, the channel is instructed to request a burst read of the next descriptor.
Processing of the next descriptor (and whether or not a done signal is generated) is determined by the
programming of channel’s configuration register. Two modes of operation are supported:
The channel can signal done through an interrupt, or by a write-back of to descriptor header in non-SEC
memory after processing a descriptor. Either the value written back is identical to that of the header, with
the exception that a DONE field is set, or special status fields are written back. That status writeback field
can be reserved for descriptors performing ICV checking.
Occasionally, a descriptor field may not be applicable to the requested service. For example, if using DES
in ECB mode, the contents of the IV field do not affect the result of the DES computation. Therefore, when
processing descriptors, the channel skips any pointer that has an associated length of zero.
For more information, refer to
14-4
•
•
•
•
One long-word of header—The header describes the required services and encodes information
that indicates which EUs to use and which modes to set. It also indicates whether notification
should be sent to the host when the descriptor operation is complete.
Seven long-words containing pointers and lengths used to locate input or output data.
Signal done at end of every descriptor
Signal done at end of a selected descriptor
DPD_DES_CTX_CRYPT
LEN_DATAOUT
PTR_DATAOUT
LEN_CTXOUT
PTR_CTXOUT
LEN_DATAIN
PTR_DATAIN
PTR_CTXIN
LEN_CTXIN
Field Name
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Null pointer
Null pointer
Null length
Null length
LEN_KEY
PTR_KEY
Section 14.3, “Descriptor Overview.”
Value/Type
Table 14-1. Example Descriptor
Variable
Pointer
Pointer
Pointer
Pointer
Pointer
Pointer
Pointer
Length
Length
Length
Length
Length
Length
Length
Number of bytes to be written
Pointer to context (IV) to be written into DES engine
Number of bytes in key
Pointer to block cipher key
Number of bytes of data to be ciphered
Pointer to data to perform cipher upon
Number of bytes of data after ciphering
Pointer to location where cipher output is to be written
Length of output context (IV)
Pointer to location where altered context is to be written
Zeros for fixed length descriptor
Zeros for fixed length descriptor
Zeros for fixed length descriptor
Zeros for fixed length descriptor
Representative header for DES using context to encrypt
Description
Freescale Semiconductor
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