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MC68331CFC16 参数 Datasheet PDF下载

MC68331CFC16图片预览
型号: MC68331CFC16
PDF下载: 下载PDF文件 查看货源
内容描述: 用户手册 [User’s Manual]
分类和应用: 微控制器和处理器外围集成电路时钟
文件页数/大小: 254 页 / 1319 K
品牌: MOTOROLA [ MOTOROLA ]
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LOOPQ — QSPI Loop Mode  
0 = Feedback path disabled  
1 = Feedback path enabled  
HMIE — HALTA and MODF Interrupt Enable  
0 = HALTA and MODF interrupts disabled  
1 = HALTA and MODF interrupts enabled  
HALT — Halt  
0 = Halt not enabled  
1 = Halt enabled  
SPIF — QSPI Finished Flag  
0 = QSPI not finished  
1 = QSPI finished  
MODF — Mode Fault Flag  
0 =Normal operation  
1 =Another SPI node requested to become the network SPI master while the QSPI  
was enabled in master mode (SS input taken low).  
D
HALTA — Halt Acknowledge Flag  
0 = QSPI not halted  
1 = QSPI halted  
CPTQP — Completed Queue Pointer  
CPTQP points to the last command executed. It is updated when the current command  
is complete. When the first command in a queue is executing, CPTQP contains either  
the reset value ($0) or a pointer to the last command completed in the previous queue.  
D.4.14 RR[0:F] — Receive Data RAM  
$YFFD00–$YFFD0E  
Data received by the QSPI is stored in this segment. The CPU32 reads this segment  
to retrieve data from the QSPI. Data stored in receive RAM is right-justified. Unused  
bits in a receive queue entry are set to zero by the QSPI upon completion of the indi-  
vidual queue entry. The CPU can access the data using byte, word, or long-word ad-  
dressing.  
D.4.15 TR[0:F] — Transmit Data RAM  
$YFFD20–$YFFD3E  
Data that is to be transmitted by the QSPI is stored in this segment. The CPU32 nor-  
mally writes one word of data into this segment for each queue command to be exe-  
cuted.  
Information to be transmitted must be written to transmit data RAM in a right-justified  
format. The QSPI cannot modify information in the transmit data RAM. The QSPI cop-  
ies the information to its data serializer for transmission. Information remains in trans-  
mit RAM until overwritten.  
MC68331  
REGISTER SUMMARY  
MOTOROLA  
D-35  
USER’S MANUAL