SH7727 Datasheet, PDF (766/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 23 USB Function Controller
Name
Abbreviation R/W Initial Value Address
Access Size
Interrupt select register 0 USBISR0
R/W H'00
H'0400024A 8
(H'A400024A)*
Interrupt select register 1 USBISR1
R/W H'07
H'04000250 8
(H'A4000250)*
Note: * If the MMU does not convert addresses, use addresses in parentheses.
23.5 Register Descriptions
23.5.1 USBEP0i Data Register (USBEPDR0I)
USBEPDR0I is an 8-byte FIFO buffer for endpoint 0, holding one packet of transmit data for
control-in. Transmit data is fixed by writing one packet of data and setting bit 0 in the USB trigger
register. When an ACK handshake is returned from the host after the data has been transmitted,
EP0i TS in USB interrupt flag register 0 is set. This FIFO buffer can be initialized by means of
EP0i CLR in the USBFIFO clear register.
23.5.2 USBEP0o Data Register (USBEPDR0O)
USBEPDR0O is an 8-byte receive FIFO buffer for endpoint 0. USBEPDR0O holds endpoint 0
receive data other than setup commands. When data is received normally, EP0o TS in USB
interrupt flag register 0 is set, and the number of receive bytes is indicated in the EP0o receive
data size register. After the data has been read, setting EP0o RDFN in the USB trigger register
enables the next packet to be received. This FIFO buffer can be initialized by means of EP0o CLR
in the USBFIFO clear register.
23.5.3 USBEP0s Data Register (USBEPDR0S)
USBEPDR0S is an 8-byte FIFO buffer specifically for endpoint 0 setup command reception.
USBEPDR0S receives only setup commands requiring processing on the application side. When
command data is received normally, SETUP TS 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, the read by the application is forcibly terminated, and the read
data is invalid.
Rev. 5.00 Dec 12, 2005 page 694 of 1034
REJ09B0254-0500