Section 36 USB Function Controller (USBF)
Rev. 1.00 Oct. 01, 2007 Page 1504 of 1956
REJ09B0256-0100
36.3.1 Interrupt
Flag Register 0 (IFR0)
IFR0 is an interrupt flag register for EP0i, EP1, EP2, bus reset, and setup command reception.
When each flag is set to 1 and interrupt is enabled in the corresponding bit of IER0, an interrupt
request (USBF10 or USB11) specified by the corresponding bit in ISR0 is issued to INTC.
Clearing the flag is performed by writing 0. Writing 1 is not valid and nothing is changed. To clear
bits, access the register so that 0 should be only to the bits for the interrupt sources to be cleared
and that 1 should be written to the other bits. Do not use a bit field declaration of the C language
to clear bits.
EP2 EMPTY and EP1 FULL are status bits that indicate the FIFO states of EP1 and EP2,
respectively. Therefore, EP2 EMPTY and EP1 FULL cannot be cleared.
Initial value:
R/W:
EP1
FULL
SETUP
TS
EP0O
TS
EP0I
TR
EP0I
TS
EP2
TR
EP2
EMPTY
BRST
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0
0
0
0
1
0
0
0
R/W
R/W
R/W
R/W
R
R/W
R
R/W
R
R
R
R
R
R
R
R
Bit:
15
14
13
12
11
8
10
9
7
6
5
4
3
0
2
1
Initial value:
R/W:
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit:
31
30
29
28
27
24
26
25
23
22
21
20
19
16
18
17
Bit
Bit Name Initial Value
R/W Description
31 to 8
Undefined
R
Reserved
These bits are always read as undefined value. Write
value should always be 0.
7 BRST
0
R/W
Bus
Reset
[Setting condition]
When a bus reset signal is detected on the USB bus.
[Clearing conditions]
•
When reset
•
When 0 is written to by CPU
Содержание SH7763
Страница 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Страница 2026: ...SH7763 Hardware Manual ...