ISP1362EE/01 PHILIPS [NXP Semiconductors], ISP1362EE/01 Datasheet - Page 40

• Manufacturer Part Number: ISP1362EE/01
• Description: Single-chip Universal Serial Bus On-The-Go controller
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 12337
Product data
12.2 USB traffic generation
The USB states are reflected in the HostControllerFunctionalState (HCFS) field of the
HcControl register. The HCD is allowed to perform only the USB state transitions
shown in
USB traffic can be generated only when the ISP1362 USB HC is under the
USBOperational state. Therefore, the HCD must set the ISP1362 USB HC into the
USBOperational state. This is done by setting the HCFS field of the HcControl
register before generating USB traffic.
A brief flow of USB traffic generation is described as follows:
10. Write the 32-bit hexadecimal value 0x00000102 into either HcRhPortStatus[1] or
11. Read the HcRhPortStatus[1] and HcRhPortStatus[2] registers. Depending on
SOF packets should be visible on DP and DM now.
The HcFmNumber register contains the current frame number, which is updated
every milliseconds.
Remark: The generation of SOF is completely performed by the ISP1362 hardware.
In this state of operation, if a PTD is written to the buffer memory, it would be
processed and sent.
1. Reset the ISP1362 by using the RESET pin or the software reset.
2. Set the physical size of the ATL, interrupt, ISTL0 and ISTL1 buffers.
3. Write the 32-bit hexadecimal value 0x800000FD to the HcInterruptEnable
4. Write the 16-bit hexadecimal value 0x002D to the HcHardwareConfiguration
5. Write 0x05000B02 to HcRhDescriptorA and 0x00000000 to HcRhDescriptorB.
6. Write the 16-bit hexadecimal value 0x0680 to the HcControl register to set the
7. Read the HcRhPortStatus[1] and HcRhPortStatus[2] registers. These registers
8. Connect a full-speed device to one of the downstream ports or use a 1.5 k
9. Read the HcRhPortStatus[1] and HcRhPortStatus[2] registers. The hexadecimal
register. This will enable all the interrupt events in the register to trigger the
hardware interrupt (see
register. This will set up the HC to level triggered and active HIGH interrupt
setting (see
ISP1362 into the Operation mode (see
contain the 32-bit hexadecimal value 0x00010100 (see
resistor to pull up the DP line (to emulate a full-speed device).
value of one of the registers must change to 0x00010101 indicating that a device
connection has been detected.
HcRhPortStatus[2] depending on the port that is being used.
which port the USB device is connected to, one of the registers should contain
the hexadecimal value 0x00010103.
Figure
Section
21.
Rev. 03 — 06 January 2004
15.4.1).
Section
15.1.5).
Section
Single-chip USB OTG controller
15.1.2).
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Section
ISP1362
15.3.4).
40 of 150