參數(shù)資料
型號： M37641M8-100FP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁數(shù)： 49/149頁
文件大?。?/td> 1997K
代理商： M37641M8-100FP
49
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
[USB Interrupt Status Registers 1 and 2] USBIS1, USBIS2
The USB interrupt status registers are used to indicate the condi-
tion that caused a USB function interrupt to be generated. Each
status flag and bit can be cleared to
“
0
”
by writing
“
1
”
to the corre-
sponding bit. Make sure to write to/read from the USB interrupt
status register 1 first and then USB interrupt status register 2.
When an IN token is received during an isochronous transfer, and
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0
the IN FIFO is empty, an underrun error occurs and INTST12 and
IN_CSR2 are set to
“
1
”
. When an OUT token is received and the
OUT FIFO is full, an overrun error occurs and INTST12 and
OUT_CSR2 are set to
“
1
”
. Underruns and overruns are not de-
tected by the CPU in bulk transfers and normal interrupt transfers,
however in this case, the MCU will send a NAK signal to the host
CPU.
Fig. 40 Structure of USB interrupt status register 1
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