參數(shù)資料
型號: QSMRM
英文描述: QSMRM QSM Queued Serial Module Reference Manual
中文描述: QSMRM QSM排隊串行模塊參考手冊
文件頁數(shù): 14/112頁
文件大?。?/td> 1496K
代理商: QSMRM
MOTOROLA
1-4
FUNCTIONAL OVERVIEW
QSM
REFERENCE MANUAL
on byte, word, and long-word boundaries. The 80 bytes of static RAM are distinct from
the QSM register set. All bytes not used by the QSPI may be used as general-purpose
RAM. When operating, the QSPI submodule uses three non-contiguous blocks of the
80-byte RAM for receive, transmit, and control data. More information on the QSPI
RAM can be found in
4.3.6 QSPI RAM
.
The contents of most locations in the memory map may be rewritten with the identical
value to that location, with one exception. (Refer to
4.3.3 QSPI Control Register 2
(SPCR2)
.) Writing a different value to certain control registers when a submodule us-
ing that register is enabled can cause unpredictable results. For predictable operation,
if register bits are to be changed, the CPU should disable the submodule in an orderly
fashion before altering the registers.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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