Section 18 Universal Serial Bus Interface (USB)
Rev. 3.00 Jan 25, 2006 page 580 of 872
REJ09B0286-0300
Bit
Bit Name Initial Value R/W
Description
0
EP0OTF
0
R/(W)
*
Endpoint 0 Host Output Transfer Failure Flag
Indicates that the endpoint 0 host output transfer has
been completed abnormally.
Endpoint 0 host output transfer has two transactions:
OUT transaction and SETUP transaction. Data
transmission in these transactions are the same, but flag
handling in these transactions differ.
Since most of the commands sent by a SETUP
transaction are processed in the USB function core, the
EP0OTS flag in TSFR0 is not set and the EP0OTF flag
is set to 1. For a command that cannot be processed in
the USB core, the EP0OTS flag is set to 1. Note that
neither the EP0OTS nor the EP0OTF flag is set to 1 if
the SEICNT bit in USBMDCR is set to 1 regardless of
whether the command can be processed in the USB
core or not.
0: Indicates that the endpoint 0 is in a transfer wait state.
[Clearing conditions]
•
0 is written to EP0OTF after EP0OTF = 1 has been
read.
•
Endpoint 0 has received a SETUP token.
1: Indicates that the endpoint 0 host output transfer
(OUT transaction or SETUP transaction) has been
completed abnormally.
[Setting conditions]
•
Data cannot be sent because the FIFO is full after an
OUT token has been received.
•
Data cannot be sent because EP0OTC = 0 after an
OUT token has been received (NAK transmission).
•
A communication error occurs after the OUT token
has been received.
•
A received command can be processed in the USB
function core (only when the SETICNT bit is cleared
to 0) after a SETUP token has been received.
Note:
*
Only 0 can be written to clear the flag.
Содержание H8S/2158
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Страница 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
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Страница 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Страница 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Страница 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Страница 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Страница 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Страница 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Страница 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Страница 744: ...Section 20 Encryption Operation Circuit DES and GF Rev 3 00 Jan 25 2006 page 690 of 872 REJ09B0286 0300...
Страница 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Страница 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Страница 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Страница 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Страница 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Страница 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Страница 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...