AcroPack Series ACPS3320
CompactPCI-Serial Carrier Board
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TMS
–
JTAG Test Mode Select
. This pin is the JTAG mode signal establishing
appropriate TAP state transitions for target ISP devices sharing the
same data stream.
TCK
–
JTAG Test Clock
. This pin is the clock signal for JTAG operations and
should be connected to the TCK pin on all target ISP devices sharing the
same data stream.
TDO
–
JTAG Test Data Out
. This pin is the serial data stream received from the
TDO pin on the last device in a JTAG chain.
TDI
–
JTAG Test Data In
. This pin outputs the serial data stream transmitted to
the TDI pin on the first device in a JTAG chain.
+3.3V
–
The target reference voltage V
REF
is 3.3 Volts
GND
–
Ground.
3.
THEORY OF OPERATION
This section describes the functionality of the circuitry used on the carrier
board. Refer to Figure 3 as you read this section.
