M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 52
M30240ECFP
Manufacturer Part Number
M30240ECFP
Description
M30240 Group Specification
Manufacturer
MITSUBISHI [Mitsubishi Electric Semiconductor]
Datasheet
1.M30240ECFP.pdf
(142 pages)
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Specifications in this manual are tentative and subject to change
Universal Serial Bus
Figure 1.34: USB Interrupt Status Register 1
2.18.4.5 USB Interrupt Status Registers 1 and 2
USB Interrupt Status Registers 1 and 2, shown in Figure 1.34 and Figure 1.35, are used to indicate the con-
dition that caused a USB function interrupt and USB Reset, Suspend and Resume Interrupts to the CPU. A
“1” indicates the corresponding condition caused an interrupt. The USB Interrupt Status Register bits can be
cleared by writing a “1” to the corresponding bit.
INTST0 is set to a “1” by the USB FCU when (in Endpoint 0 CSR):
INTST2, INTST4, INTST6 or INTST8 is set to a “1” by the USB FCU when (in Endpoint x IN CSR):
INTST3, INTST5, INTST7 or INTST9 is set to a “1” by the USB FCU when (in Endpoint xOUT CSR):
INTST12 is set to a “1” by the USB FCU when an overrun or underrun condition occurs in any of the endpoints.
INTST13 is set to a “1” by the USB FCU when a USB reset signaling from the host is received. All internal
register bits except this bit are reset to their default values when the USB reset is received.
INTST14 is set to a “1” by the USB FCU when the USB FCU is in the suspend state and non-idle signaling is
received from D+/D-.
INTST15 is set to a “1” by the USB FCU when D+/D- are in the idle state for more than 3ms.
USB Interrupt Status Register 1
b7
•A packet of data is successfully received (EP0CSR0 - OUT_PKT_RDY is set by the USB FCU)
•A packet of data is successfully sent (EP0CSR - IN_PKT_RDY is cleared by the USB FCU)
•EP0CSR3 (DATA_END) bit is cleared by the USB FCU
•EP0CSR4 (FORCE_STALL) bit is set by the USB FCU
•EP0CSR5 (SETUP_END) bit is set by the USB FCU
•A packet of data is successfully sent (INXCSR0 - IN_PKT_RDY is cleared by the USB FCU)
•INXCSR1 (UNDER_RUN) bit is set by the USB FCU
•A packet of data is successfully received (OUTXCSR0 - OUT_PKT_RDY is set by the USB FCU)
•OUTXCSR1 (OVER_RUN) bit is set by the USB FCU
•OUTXCSR4 (FORCE_STALL) bit is set by the USB FCU
b6
b5
b4
b3
b2
0
b1
b0
Bit symbol
Reserved
INTST0
INTST2
INTST3
INTST4
INTST5
INTST6
INTST7
Symbol
USBIS1
USB Endpoint 0 Interrupt
Status Flag
USB Endpoint 1 OUT
Interrupt Status Flag
USB Endpoint 2 IN
Interrupt Status Flag
USB Endpoint 1 IN
Interrupt Status Flag
USB Endpoint 2 OUT
Interrupt Status Flag
USB Endpoint 3 IN
Interrupt Status Flag
USB Endpoint 3 OUT
Interrupt Status Flag
Bit name
1-52
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Address
0302
Must always be set to "0"
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
16
Function
Mitsubishi microcomputers
M30240 Group
When reset
00
16
R
W
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