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19 power output, 20 jtag, Power output – Sundance SMT148FX User Manual

Page 22: Jtag

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4.1.19 Power output
Power can be supplied to external devices or modules. The 8-pin connector
(Receptacle, mini fit 8 Way, Molex) JP16 provides several voltages and has the
following pinout:

Pin

number

-12V 1

+12V 2

+5V 3

+3.3V 4

GND 5

GND 6

GND 7

Key 8

Table 2 : Power out pinout

Connector position 8 is filled to prevent plugging in the power input
cable (the connectors are the same type). A modified plug (pin 8
removed) must be used for power output.



4.1.20 JTAG
A single JTAG chain connects all 4 TIM sites and the JTAG in & out connectors. This
chain is used with the TI Code Composer Studio software suite. Although in essence
it is a chain, the chain exists internally to a Xilinx CPLD. The CPLD drives and
receives signals to the 4 TIM sites independently. This allows JTAG clock
frequencies in excess of 30MHz to work reliably.
The JTAG-out (JTAG2) connector can be connected to the JTAG-in (JTAG1) connector
of other SMT148FX, thus extending the chain (see cable SMT503).
All JTAG chaining and TIM bypass is performed within the CPLD.

User Manual SMT148FX

Page 22 of 48

Last Edited: 03/08/2009 11:42:00