DE2-115 Datasheet, PDF (62/116 Pages) Altera Corporation – The DE2-115 package contains all components needed to use the DE2-115 board in conjunction with a computer that runs the Microsoft Windows OS.

4.17 Using the USB Interface
The DE2-115 board provides both USB host and device interfaces using the Philips ISP1362
single-chip USB controller. The host and device controllers are compliant with the Universal Serial
Bus Specification Rev. 2.0, supporting data transfer at full-speed (12 Mbit/s) and low-speed (1.5
Mbit/s). Figure 4-31 shows the schematic diagram of the USB circuitry; the pin assignments for the
associated interface are listed in Table 4-25.
Detailed information for using the ISP1362 device is available in its datasheet and programming
guide; both documents can be found on the manufacturer’s website, or in the
DE2_115_datasheets\USB folder on the DE2-115 System CD. The most challenging part of a USB
application is in the design of the software driver needed. Two complete examples of USB drivers,
for both host and device applications, can be found in Sections 6.4 and 6.5. These demonstrations
provide examples of software drivers for the Nios II processor.
Signal Name
OTG_ADDR[0]
OTG_ADDR[1]
OTG_DATA[0]
OTG_DATA[1]
OTG_DATA[2]
OTG_DATA[3]
OTG_DATA[4]
OTG_DATA[5]
OTG_DATA[6]
OTG_DATA[7]
Figure 4-31 Connections between FPGA and USB (ISP1362)
Table 4-25 USB (ISP1362) Pin Assignments
FPGA Pin No. Description
PIN_H7
ISP1362 Address[0]
PIN_C3
ISP1362 Address[1]
PIN_J6
ISP1362 Data[0]
PIN_K4
PIN_J5
ISP1362 Data[1]
ISP1362 Data[2]
PIN_K3
ISP1362 Data[3]
PIN_J4
ISP1362 Data[4]
PIN_J3
ISP1362 Data[5]
PIN_J7
ISP1362 Data[6]
PIN_H6
ISP1362 Data[7]
61
I/O Standard
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V