TS-7400/TS-9441 MANUAL
CONNECTORS AND HEADERS
6 CONNECTORS AND HEADERS
6.1 10/100 Base-T Ethernet Connector
The EP9302 Ethernet LAN controller incorporates all the logic needed to interface directly
to any MII compatible Ethernet PHY chip. A low-power Micrel KS8721 chip is used to
implement the Ethernet PHY function and an integrated RJ-45 connector with built-in
10/100 transformer and LED indicators completes the Ethernet sub-system.
The
TS-7400
has both a LINK/ACTIVITY LED and a 10/100 speed LED built into each RJ-
45 connector that indicates the current Ethernet status. The LINK LED (left side of
connector, green) is active when a valid Ethernet link is detected. This LED should be ON
whenever the
TS-7400
is powered and properly connected to a 10/100BaseT Ethernet
network. The LINK/ACTIVITY LED will blink to indicate network activity for either inbound
or outbound data. The SPEED LED (right side of connector, amber) will be on when a
100Mb network is detected and off for a 10Mb network. Both of these LEDs are controlled
by the KS8721 and do not require any overhead by the processor.
The Ethernet PHY chip can be powered down, under software control, to save
approximately 90 mA of current consumption. This is controlled by the EP9302 Digital
output on Port H, bit 2. A logic zero will power down the KS8721 PHY interface.
Note
TS-Kernel provides all the software support to use the EP9302 10/100 Ethernet
core. For more details, find the TCP/IP configuration instructions on the Linux
documentation.
6.2 USB Connector
The USB Connector on the
TS-7400
provide two USB interfaces for the user. These are
directly connected to the EP9302 processor, which integrates an USB dual-port Open
Host Controller Interface (OHCI), providing full-speed serial communications ports at a
baud rate of 12 Mbits/sec. Up to 127 USB devices (printer, mouse, camera, keyboard,
etc.) and USB hubs can be connected to the USB host in the USB “tiered-star” topology.
This includes the following features:
✔
USB 2.0 compatible
✔
OHCI Rev 1.0 compliant
✔
USB device connections support at both low-speed (1.5 Mbps) and full-speed (12
Mbps)
✔
Root HUB integrated with 2 downstream USB ports
✔
Transceiver buffers integrated, over-current protection on ports
✔
Supports power management
✔
Operates as a master on the bus
Note
TS-Kernel implements all the necessary driver support to enable the USB OHCI.
Also, a wide variety of USB drivers for devices such as mouse, keyboard and flash
memory are available. Refer to the Linux for TS-ARM User's Guide or contact us
for further information on how to integrate an USB device and an USB Linux driver
with your
TS-7400
.
© May, 2010 www.embeddedARM.com 34
