Section 18 Universal Serial Bus Interface (USB)
Rev. 3.00 Jan 25, 2006 page 623 of 872
REJ09B0286-0300
Initialization Sequence:
The USB module is initialized in the sequence shown in figure 18.14.
1. The LSI is placed in a power off state or hardware standby mode.
2. Turn the power on, apply a high level to the
STBY
pin, and finally apply a high level to the
RES
pin to initiate the LSI operation.
3. Check the VBUS line (USB cable) by firmware.
4. Cancel module stop mode of the USB module by firmware.
5. Set the VBUSS bit in USBCR1 to 1 by firmware.
6. Specify UPLLCR by firmware and wait for USB operating clock PLL stabilization time (3
ms).
7. Set the CK48READY bit in USBCR1 to 1 by firmware.
8. Clear the UIFRST bit in USBCR0 to 0 by firmware and specify the USB module related
registers.
9. Clear the FPLLRST bit in USBCR0 to 0 by firmware.
10. After the DPLL operation stabilization time has passed, clear the FSRST bit in USBCSR0 to 0
by firmware.
11. Write EPINFO to the USB function core and set the EPIVLD bit in USBCR0 to 1 by firmware.
12. Specify external pull-up resistors to be connected by firmware.
13. Wait for a bus reset interrupt .
• The host executes the bus reset.
• The host configures the USB function core.
→
The USB function core initiates operation.
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...
Страница 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
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Страница 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
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...