MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 1024
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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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Universal Serial Bus Interface
An example traversal of a periodic schedule that includes FSTNs is illustrated in
In frame N (micro-frames 0-7), for this example, the host controller traverses all of the schedule data
structures utilizing the Normal Path Link Pointers in any FSTNs it encounters. This is because the host
controller has not yet encountered a Save-Place FSTN so it is not executing in Recovery Path mode. When
it encounters the Restore FSTN, (Restore-N), during micro-frames 0 and 1, it uses Restore-N. Normal Path
Link Pointer to traverse to the next data structure (that is, normal schedule traversal). This is because the
host controller must use a Restore FSTN's Normal Path Link Pointer when not executing in a
Recovery-Path mode. The nodes traversed during frame N include: {8
1
In frame N+1 (micro-frames 0 and 1), when the host controller encounters Save-Path FSTN (Save-N), it
observes that Save-N.Back Path Link Pointer.T-bit is zero (definition of a Save-Path indicator). The host
controller saves the value of Save-N. Normal Path Link Pointer and follows Save-N.Back Path Link
16-96
0
...}.
•
Micro-Frames 0, 1
Normal Traversal
Normal Traversal
IN or an OUT). Refer to the EHCI Specification for a complete list of additional conditions that
must be met in general for the host controller to issue a bus transaction. Note that the host controller
must not execute a Start-split transaction while executing in Recovery Path mode. Refer to the
EHCI Specification for special handling when in Recovery Path mode.
Stop traversing the recovery path when it encounters an FSTN that is a Restore indicator. The host
controller unconditionally uses the saved value of the Save-Place FSTN's Normal Path Link
Pointer when returning to the normal path traversal. The host controller must clear the context of
executing a Recovery Path when it restores schedule traversal to the Save-Place FSTN's Normal
Path Link Pointer.
If the host controller determines that there is not enough time left in the micro-frame to complete
processing of the periodic schedule, it abandons traversal of the recovery path, and clears the
context of executing a recovery path. The result is that at the start of the next consecutive
micro-frame, the host controller starts traversal at the frame list.
for Frame N+1
for Frame N
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Figure 16-55. Example Host Controller Traversal of Recovery Path via FSTNs
Frame Numbers
N+5
N+4
N+3
N+1
N–1
N–2
N
83.0
82.0
87
86
85
84
81
80
82.1
83.1
Save = N
83.2
82.2
T-Int = 0
82.3
N-Ptr
B-Ptr
43
42
41
40
2.0
, 8
Causes ‘Restore’
2.1
to Normal Path
, 8
21
20
2.2
Traversal
, 8
Figure
N-Ptr
B-Ptr
Restore = N
2.3
Freescale Semiconductor
Recovery Path
Traversal
, 4
2
16-55.
T-Int = 1
, 2
10
0
, Restore-N,
• • •
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