TS-7400/TS-9441 MANUAL
CONNECTORS AND HEADERS
6.5 TS-9441 Console Header
Note
The information on this section applies to the TS-9441 recovery/console peripheral
board for the TS-7400.
The console header brings out a serial port. Use the RC-DB9 connector to connect the
TS-7400/TS-9441 to a DB9 cable and to your PC running a terminal emulator.
6.6 TS-9441 JTAG Header
Note
The information on this section applies to the TS-9441 recovery/console peripheral
board for the TS-7400.
The JTAG header can be used to program the on-board CPLD using special software and
hardware support tools. However, it is not available for application debug purposes since
it has no connection to the EP9302 JTAG interface. The following table shows which pins
of the JTAG header are used for the JTAG interface signals:
Table: JTAG signals at JTAG Header
PIN
Signal
Description
9
TCK
Test Clock
11
TDI
Test Data In
13
TMS
Test Mode Select
14
TDO
Test Data Out
1, 3, 5
3.3 VCC
Power Supply
10, 12
GND
Ground
The JTAG header is also utilized for jumper configuration. See the Jumpers section of this
manual for more details.
Technologic Systems has made the design choice to save on board real-estate and not
bring out the JTAG header. If you need access to the JTAG pins, a skilled technician can
solder wires to the pins.
6.7 Power Supply Connector
The
TS-7400
requires regulated 5VDC at 450 mA @ 200 MHz(maximum). It is possible to
lower this power significantly by lowering the CPU clock rate or by powering-down the
Ethernet PHY chip. For example, by shutting down the Ethernet PHY chip and scaling
down the CPU clock rate to 20 MHz, one can obtain power consumptions less than 150
mA. If you really need a low-power board, consider the
TS-7260
, which is optimized for
low power applications.
A quick release screw-down terminal block for the 5V power and power GND connections
is provided on the TS-9441 for easy connection to an external power supply.
!
Warning
Supply voltages over 6 VDC may damage the
TS-7400
.
Be sure to use a regulated 5 VDC power supply, preferably with current limiting to 1 to 3
Amps. A current limited supply is very forgiving of common errors during development. A
PC power supply that may be capable of supplying 20 Amps or more is not
recommended. It is possible to do irreversible damage to the
TS-7400
if the polarity on the
power leads is reversed.
© May, 2010 www.embeddedARM.com 38
