R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 1228

• Manufacturer Part Number: R0K572030S000BE
• Description: KIT DEV FOR SH7203
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572030S000BE

• Contents: CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
• Silicon Manufacturer: Renesas
• Kit Contents: Board
• Silicon Family Name: SH7203
• Silicon Core Number: R5S72030W200FP
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: SH7203
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SH7203
• Lead Free Status / Rohs Status: Compliant

Section 23 USB 2.0 Host/Function Module (USB)
(8)
With the pipes for bulk transfer (PIPE1 to PIPE5), when the ATREPM bit in PIPEnCTR is set to
1, a transition is made to auto response mode. During an OUT transfer (DIR = 0), OUT-NAK
mode is entered, and during an IN transfer (DIR = 1), null auto response mode is entered.
(a)
With the pipes for bulk OUT transfer, NAK is returned in response to an OUT or PING token and
an NRDY interrupt is output when the ATREPM bit is set to 1. To make a transition from normal
mode to OUT-NAK mode, OUT-NAK mode should be specified in the pipe operation disabled
state (response PID = NAK) before enabling pipe operation (response PID = BUF). After pipe
operation has been enabled, OUT-NAK mode becomes valid. However, if an OUT token is
received immediately before pipe operation is disabled, the token data is normally received, and
an ACK is retuned to the host.
To make a transition from OUT-NAK mode to normal mode, OUT-NAK mode should be
canceled in the pipe operation disabled state (response PID = NAK) before enabling pipe
operation (response PID = BUF). In normal mode, reception of OUT data is enabled and an ACK
is returned in response to a PING token if the buffer is ready to receive data.
(b)
With the pipes for bulk IN transfer, zero-length packets are continuously transmitted when the
ATREPM bit is set to 1.
To make a transition from normal mode to null auto response mode, null auto response mode
should be set in the pipe operation disabled state (response PID = NAK) before enabling pipe
operation (response PID = BUF). After pipe operation has been enabled, null auto response mode
becomes valid. Before setting null auto response mode, INBUFM = 0 should be confirmed
because the mode can be set only when the buffer is empty. If the INBUFM bit is 1, the buffer
should be emptied with the ACLRM bit. While a transition to null auto response mode is being
made, data should not be written from the FIFO port.
To make a transition from null auto response mode to normal mode, pipe operation disabled state
(response PID = NAK) should be retained for the period of zero-length packet transmission (full-
speed: 10 μs, high-speed: 3 μs) before canceling null auto response mode. In normal mode, data
can be written from the FIFO port; therefore, packet transmission to the host is enabled by
enabling pipe operation (response PID = BUF).
Rev. 3.00 Sep. 28, 2009 Page 1196 of 1650
REJ09B0313-0300
Auto Transfer MODE
OUT-NAK Mode
Null Auto Response Mode