Altera Santa Cruz - Manual (Page 17)

Chapter 2: Board Components 2–11
USB On-The-Go Transceiver (U11)
© December 2008 Altera Corporation Santa Cruz, USB, MICTOR, SD Card HSMC Reference Manual
Table 2–8 lists the Santa Cruz board reference and manufacturing information.
USB On-The-Go Transceiver (U11)
The THDB-SUM board is equipped with an NXP ISP1504C USB OTG transceiver
(U11) and a Mini USB AB type receptacle connector (J8) to provide USB interface to
the HSMC interface host board. The NXP ISP1504C is a USB OTG transceiver that is
fully compliant with the Universal Serial Bus Specification Rev. 2.0, On-The-Go
Supplement to the USB 2.0 Specification Rev. 1.3 and UTMI+ Low Pin Interface (ULPI)
Specification Rev. 1.1.
As mentioned in the preceding section, the USB transceiver and Santa Cruz
connectors share the same I/O pins connected to the HSMC connector. This means
you can only select one function at a time between the USB transceiver and
Santa Cruz connectors. To select the USB transceiver function, set the JP1 header to
the open position.
f
For more information about the USB transceiver, visit the NXP Semiconductors
website at
www.nxp.com .
In OTG implementations, the 2-pin header JP2 is connected to the identification
(ID) pin of the USB OTG transceiver and the micro-USB receptacle. The logic level of
the ID pin on the USB OTG transceiver can be configured to logic high or low through
JP2, as shown in
Figure 2–10 .
As defined in the On-The-Go Supplement to the USB 2.0 Specification Rev. 1.3, the ID pin
dictates the initial role of the USB link. If the ID pin is detected as HIGH, the link must
assume the role of a peripheral. If ID pin is detected as LOW, the link must assume the
role of a host.
Table 2–8. Santa Cruz Connector Board Reference and Manufacturing Information
Board Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
J3, J4, and J5 Santa Cruz Connector Various Standard 0.1 in. dual-row headers.
J3: 14 pins. J4: 20 pins.
J5: 40 pins.
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