MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 531
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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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10.4.4.4.3
If BR
UPM affects the assertion and negation of the appropriate LBS[0:1] signal. The timing of both byte-select
signals is specified in the RAM word. However, LBS[0:1] are also controlled by the port size of the
accessed bank, the number of bytes to transfer, and the address accessed.
control LBS[0:1].
The uppermost byte select (LBS0), when asserted, indicates that LAD[0:7] contains valid data during a
cycle. Likewise, LBS1 indicates that LAD[8:15] contain valid data. For a UPM refresh timer request, all
LBS[0:1] signals are asserted/negated by the UPM according to the refresh pattern only. Following any
internal bus monitor exception, the LBS[0:1] signals are negated regardless of the exception handling
provided by any UPM exception pattern to prevent spurious writes to external RAM.
10.4.4.4.4
The general-purpose signals (LGPL[0:5]) each have two bits in the RAM word that define the logical value
of the signal to be changed at the rising edge of the bus clock and/or at the falling edge of the bus clock.
LGPL0 offers enhancements beyond the other LGPL
LGPL0 can be controlled by an address line specified in M
should be set in the RAM word. For example, for a SIMM with multiple banks, this address line can be
used to switch between internal memory device banks.
10.4.4.4.5
The LOOP bit in the RAM word specifies the beginning and end of a set of UPM RAM words that are to
be repeated. The first time LOOP = 1, the memory controller recognizes it as a loop start word and loads
the memory loop counter with the corresponding contents of the loop field shown in
RAM word for which LOOP = 1 is recognized as a loop end word. When it is reached, the loop counter is
decremented by one.
Freescale Semiconductor
n
[MSEL] of the accessed memory bank selects a UPM on the currently requested cycle, the selected
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Byte Select Signal Timing (BST
General-Purpose Signals (G
Loop Control (LOOP)
UPMC
UPMA
UPMB
Figure 10-66. LBS Signal Selection
BR n [MSEL]
MUX
Bank Selected
n
T
n
, GO
n
n
)
BR n [PS]
lines.
n
x
)
MR[G0CL]. To use this feature, G0H and G0L
Byte-Select
Byte count
Logic
LA[23:25]
Figure 10-66
Enhanced Local Bus Controller
Table
LBS0
LBS1
shows how UPMs
10-41. The next
10-83
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