參數(shù)資料
型號： M37640M8-XXXFP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE CHIP 8 BIT CMOS MICROCOMPUTER
中文描述： 單片微機(jī)8位CMOS
文件頁數(shù)： 56/96頁
文件大小： 1477K
代理商： M37640M8-XXXFP
56
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
The USB FCU is able to generate a USB function in-
terrupt as discussed in section 1.21.2.1. The
USB
Interrupt Status Registers (USBIS1, USBIS2)
,
shown in Figure 1.55 and Figure 1.56, are used to in-
dicate the condition that caused a USB function
interrupt to be generated. A “1” indicates that the cor-
responding condition caused a USB function interrupt.
The USB Interrupt Status Register can be cleared by
writing back to the register the same value that was
read. To ensure proper operation, the CPU should read
both USB interrupt status registers, then write back
the same values it read to these two registers for
clearing the status bits. The CPU must write to USB
Interrupt Status Register 1 first and then to USB Inter-
rupt Status Register 2. The registers cannot be
cleared by writing a “0” to the bits that are a “1”.
Fig. 1.55. USB Interrupt Status Register 1 (USBIS1)
INTST0
USB Endpoint 0 Interrupt Status Flag (bit 0)
Bit 1
Reserved (Read/Write “0”)
INTST2
INTST3
INTST4
INTST5
INTST6
INTST7
USB Endpoint 1 IN Interrupt Status Flag (bit 2)
USB Endpoint 1 OUT Interrupt Status Flag (bit 3)
USB Endpoint 2 IN Interrupt Status Flag (bit 4)
USB Endpoint 2 OUT Interrupt Status Flag (bit 5)
USB Endpoint 3 IN Interrupt Status Flag (bit 6)
USB Endpoint 3 OUT Interrupt Status Flag (bit 7)
0: No interrupt request issued
1: Interrupt request issued
INTST7
INTST5
INTST4
INTST2
Reserved
MSB
7
LSB
0
Address: 0052
16
Access: R/W
Reset: 00
16
INTST6
INTST3
INTST0
Fig. 1.56. USB Interrupt Status Register 2 (USBIS2)
INTST8
INTST9
USB Endpoint 4 In Interrupt Status Flag (bit 0)
USB Endpoint 4 Out Interrupt Status Flag (bit 1)
Bit 3:2
Reserved (Read/Write “0”)
INTST12
INTST13
INTST14
INTST15
USB Overrun/Underrun Interrupt Status Flag (bit 4)
USB Reset Interrupt Status Flag (bit 5)
USB Resume Signaling Interrupt Status Flag (bit 6)
USB Suspend Signaling Interrupt Status Flag (bit 7)
0: No interrupt request issued
1: Interrupt request issued
INTST15
INTST13
INTST12
Reserved
INTST9
MSB
7
LSB
0
Address: 0053
16
Access: R/W
Reset: 00
16
INTST14
Reserved
INTST8
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