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KTD-N0849-C
5.3 USB Connectors (IO Area)
The KTQ67/Flex-Medical board contains two EHCI (Enhanced Host Controller Interface) host
controllers (EHCI1 and EHCI2) that support up to fourteen USB 2.0 ports, twelve are available on the
KTQ67/Flex-Medical. The USB2.0 ports allowing data transfers up to 480Mb/s and legacy
Keyboard/Mouse and wakeup from sleep states are supported. Over-current detection on all fourteen
USB ports is supported. The following USB connectors are available in the IO Area.
USB Port 0 - 3 (all via EHCI1) are supplied on the combined USB0, USB1, USB2 and USB3 connector.
Note: It is required to use only HiSpeed USB cable, specified in USB2.0 standard:
5.3.1 USB Connector 0/1/2/3 (USB0/1/2/3)
USB Ports 0, 1, 2 and 3 are mounted in a common stack connector.
Note
1
1
1
1
Note 1: In order to meet the requirements of USB standard, the 5V input supply must be at least 5.00V.
Signal
Description
USB0+ USB0-
USB1+ USB1-
Differential pair works as Data/Address/Command Bus.
USB2+ USB2-
USB3+ USB3-
5V supply for external devices. SB5V is supplied during powerdown to allow
5V/SB5V
wakeup on USB device activity. Protected by resettable 1A fuse for each USB ports.
Page 30
Type
Signal
PIN
PWR
5V/SB5V
1
2
IO
USB0-
PWR
5V/SB5V
1
2
IO
USB1-
PWR
5V/SB5V
1
2
IO
USB2-
PWR
5V/SB5V
1
2
IO
USB3-
IO-Area Connectors
Signal
Type
Note
3
4
GND
PWR
USB0+
IO
3
4
GND
PWR
USB1+
IO
3
4
GND
PWR
USB2+
IO
3
4
GND
PWR
USB3+
IO
KTQ67/Flex -Medical Users Guide
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