MC68360RC25K Freescale Semiconductor, MC68360RC25K Datasheet - Page 208
MC68360RC25K
Manufacturer Part Number
MC68360RC25K
Description
IC MPU QUICC 25MHZ 241-PGA
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68EN360VR25L.pdf
(14 pages)
2.MC68EN360VR25L.pdf
(2 pages)
3.MC68360AI25L.pdf
(962 pages)
Specifications of MC68360RC25K
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
241-PGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
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CPU32+
“not ready/come again” response. Once the receive data latch has been loaded, the CPU is
released to act on the new data. Response data overwrites the “not ready” response when
the CPU has completed the current operation.
Data written into the output shift register appears immediately on the DSO signal. In general,
this action changes the state of the signal from a high (“not ready” response status bit) to a
low (valid data status bit) logic level. However, this level change only occurs if the command
completes successfully. Error conditions overwrite the “not ready” response with the appro-
priate response that also has the status bit set.
A user can use the state change on DSO to signal hardware that the next serial transfer may
begin. A timeout of sufficient length to trap error conditions that do not change the state of
DSO should also be incorporated into the design. Hardware interlocks in the CPU prevent
result data from corrupting serial transfers in progress.
5.6.2.7.2 Development System Serial Logic. The development system, as the master of
the serial data link, must supply the serial clock. However, normal and BDM operations
could interact if the clock generator is not properly designed.
Breakpoint requests are made by asserting BKPT to the low state in either of two ways. The
primary method is to assert BKPT during a single bus cycle for which an exception is
desired. Another method is to assert BKPT, then continue to assert it until the CPU32+
responds by asserting FREEZE. This method is useful for forcing a transition into BDM when
5-66
SYNCHRONIZED
SYNCHRONIZED
INTERNAL
INTERNAL
WINDOW
SAMPLE
CLKOUT
CLKOUT
FREEZE
DSCLK
DSCLK
DSO
Figure 5-23. Serial InterfaceTiming Diagram
DSI
DSI
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
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