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Section 20 USB Function Module
Rev. 4.00 Sep. 14, 2005 Page 757 of 982
REJ09B0023-0400
20.3.11 USBEP0s Data Register (USBEPDR0s)
USBEPDR0s is an 8-byte FIFO buffer specifically for endpoint 0 setup command reception and
stores an 8-byte command data that is sent in the setup stage. USBEPDR0s receives only
commands requiring processing on the microcomputer (firmware) side. Commands that this
module automatically processes are not stored. When command data is received normally, the
SETUPTS bit in USB interrupt flag register 0 is set.
As a setup command must be received without fail, if data is left in this buffer, it will be
overwritten with new data. If reception of the next command is started while the current command
is being read, command reception has priority and the read data is invalid.
Bit Bit
Name
Initial
Value R/W
Description
7 to 0
D7 to D0
Undefined R
Register for storing the setup command on control
OUT transfer
20.3.12 USBEP1 Data Register (USBEPDR1)
USBEPDR1 is a 128-byte receive FIFO buffer for endpoint 1. USBEPDR1 has a dual-buffer
configuration, and has a capacity of twice the maximum packet size. When one packet of data is
received normally from the host, the EP1FULL bit in USB interrupt flag register 0 is set. The
number of receive bytes is indicated in the EP1 receive data size register. After the data has been
read, the buffer that was read is enabled to receive again by writing 1 to the EP1RDFN bit in the
USB trigger register. The receive data in this FIFO buffer can be transferred by DMA (dual
address transfer byte by byte).
USBEPDR1 can be initialized by means of the EP1CLR bit in USBFCLR.
Bit Bit
Name
Initial
Value R/W
Description
31 to 0
*
D31 to D0
Undefined R
Data register for endpoint 1 transfer
Note:
*
7 to 0 bits for DMA transfer.
Содержание HD6417641
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Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
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Страница 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Страница 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Страница 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Страница 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
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