A[7:1]
CSn,WRn
Data
10ns
5ns
5ns
35ns
5ns
Valid
Figure 4-2: Ethernet controller write timing
The Ethernet controller can drive two interrupts.
IRQ0 is the IRQ from the Ethernet controller.
IRQ2 is the PME output from the Ethernet controller. PME interrupts can be enabled on the IRQ pin, so this can
be disabled for host RSKs with fewer interrupt lines, if the PME interrupt is required.
Both interrupts are pulled high to 3.3V by 1K resistors.
4.3.USB Controller
The Universal Serial Bus functionality is provided by the Philips ISP1761 controller.
Refer to the manufacturer’s datasheet for more information on this peripheral.
This peripheral provides 2 Host type A and one On the Go Host/Peripheral mini AB type USB controller.
The ISP1761 controller is configured to use a 16 bit data bus. It uses single 16 bit read and write strobes.
Byte or long word accesses are not available for this device.
The chip select used for the USB controller is CS2 which is on JA3 pin 28.
Please note the timing. This will require programming the bus controller for the Host RSK.
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