MPC8536E-ANDROID Freescale Semiconductor, MPC8536E-ANDROID Datasheet - Page 456

• Manufacturer Part Number: MPC8536E-ANDROID
• Description: HARDWARE/SOFTWARE ANDROID OS
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536E-ANDROID

• Contents: Board
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Security Engine (SEC) 3.0
If all the data of LENGTH is found contiguously beginning at POINTER, then the Jump bit is not set.
Otherwise, POINTER indicates the location of a link table (scatter-gather list). For more details, see
Section 10.3.4, “Link Table
LENGTH and EXTENT fields normally specify the sizes of parcels: often (but not always) the size of the
parcel located at the address contained in the matching POINTER field
POINTER field is zero, and the LENGTH and/or EXTENT fields simply specify values to be written to
an EU. The specific use of these fields in each channel depends on the descriptor type and direction fields
in the descriptor’s header dword (see
The RAID-XOR descriptor type does not support scatter/gather capability. However, scatter/gather is
available for all pointer dwords for all other descriptor types (provided the J bit is set).
10.3.4
Link tables implement scatter/gather capability. For “gather” operations, a link table specifies a list of
“memory segments” that are to be concatenated in the process of assembling parcels. For “scatter”
operations, a link table specifies a list of memory segments into which the output data should be written.
Scatter or gather of a parcel may be specified by a single link table or by a chain of link tables that are
linked together with pointers, as shown in
A link table may contain any number of dword entries. Link table entry format is shown in
and the field definitions are given in
1. Sometimes an EXTENT field refers to data in a pointer which is not in the same dword. For example, with the CCMP descriptor
type (see
to either by Pointer4 or Pointer5, depending on the direction bit in the descriptor’s header dword.
10-26
Reset
Reset
W
W
R
R
32
0
Table
Link Table Format
10-10), the length of the CRC check field appears in Extent0, but the field that is Extent0 bytes in length is referred
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
SEGLEN
Format”.
Table
Table
Figure 10-5. Link Table Entry
Figure
10-9.
10-4).
10-6.
SEGPTR
All zeros
All zeros
15 16
—
1
21 22 23 24
. However, in some cases the
R N
Freescale Semiconductor
—
Access: Read/Write
27 28
Figure
EPTR
10-5,
31
63