Specifications

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The AgatePXC/2 uses the quad-port Renesas
uPD720201 USB Host Controller which is USB 3.0
(SuperSpeed), 2.0 (High Speed), and 1.1 (Full Speed)
compatible.
USB 2.0 supports data rates up to 480 Mbit/s and USB
3.0 up to 5Gbit/s. USB 3.0 is especially suited for even the
highest resolution video and data storage applications.
Please see Software Support (page 11) for information
about the uPD720201, FX3 and CX3 software require-
ments.
Channel 1
USB channel 1 is connected to the STM32F427 BIST
Subsystem CPU HS USB port. It is used by the BIST soft-
ware to communicate with the XMC or PMC host CPU.
Channel 2
USB channel 2 is connected to the Cypress CX3 MIPI
CSI-2 USB 3.0 peripheral controller. The MIPI connections
are made on the SDR50 connector on the front panel.
Channel 3
USB channel 3 is available on the rear I/O (XMC Pn6)
connector of the AgatePXC/2 as a standard USB 3.0 port.
It supports both USB 2.0 and 3.0 modes. Note that USB
Charger port operation is NOT supported.
Channel 4
Channel 4 is connected to the FX3 peripheral controller
which is in turn linked to the ADV7441A RGB/DVI
Graphics Digitizer.
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To help ensure that the USB 3.0 will work reliably over the
host CPU or XMC carrier board, the Agate USB XMC
wiring is length-matched and the pinouts follow differential
data pair assignments as outlined in VITA 46.9 +X8d.
You will obtain best results if your host board complies
with VITA 46.9 as well. If it doesn’t, it is likely that the USB
port will not be reliable at USB 3.0 speeds.
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Note that unlike USB 2.0, it is pretty easy to build a USB
3.0 cable that doesn’t work. Cabling requires very careful
length matching shielded twisted pairs for the USB 3.0 Rx
and Tx pairs. If at all possible, it would be best to use
commercially built cables known to comply with the USB
3.0 SuperSpeed specifications.
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USB 3.0 specifies that 0.9A @5V be supplied. However,
due to the overall power requirements of the board, the
Agate is not able to deliver this much current.
The Agate uses a TPS2051B USB power controller, which
has a design rating of 0.5A. As a practical matter, that can
be exceeded, at least for a short time, depending on the
operating temperature of the chip. But, if you know you
are going to require on average more than 0.5A, please
consider using an external supply such as the Mouser
418-TR25D-01.
page 7
Figure 4: uPD720201 Block Diagram
Agate IDT24T6
PCIe 2.0 Port
Port 1
STM32F427
Port 2
CX3
Port 3
Rear I/O
Port 4
FX3