BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 618

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(3)
• Initialization of registers after reset
• DMA transfer (Endpoint-I/F access) after reset
Notes on Reset Operation
When the reset from the host is completed (when usb_reset changes from “H” to “L”), all
the internal registers of UDC2 are initialized. (For the initial value of each register, refer
to the Section 3.16.3.3 Registers.)
Note that registers that are set while usb_reset is “H” are also initialized. Therefore, the
UDC2 registers should be set after the reset period is completed.
When a reset from the host occurs during DMA transfer, the EPx_Status register is
initialized and the bus access mode is set to “common bus access”. Therefore, DMA
transfer cannot be continued properly. When a reset occurs, the DMA controller must also
be initialized.
In the enumeration operation after reset, configure each endpoint and then initialize the
endpoints by setting the EP_Reset command in the Command register.
TENTATIVE
TMPA900CM- 617
TMPA900CM
2009-10-14