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Eclipse II Family Data Sheet Rev. Q
44
Pin Descriptions
Table 31: Pin Descriptions
Pin Direction Function Description
JTAG Pin Descriptions
TDI/RSI ITest Data In for JTAG/RAM init.
Serial Data In
Hold HIGH during normal operation. Connects to serial
PROM data in for RAM initialization. Connect to VDED2 if
unused
TRSTB/RRO I/0 Active low Reset for JTAG/RAM
init. reset out
Hold LOW during normal operation. Connects to serial
PROM reset for RAM initialization. Connect to GND if unused
TMS ITest Mode Select for JTAG Hold HIGH during normal operation. Connect to VDED2 if not
used for JTAG
TCK ITest Clock for JTAG Hold HIGH or LOW during normal operation. Connect to
VDED2 or GND if not used for JTAG
TDO/RCO OTest data out for JTAG/RAM init.
clock out
Connect to serial PROM clock for RAM initialization. Must be
left unconnected if not used for JTAG or RAM initialization.
The output voltage drive is specified by VDED.
Dedicated Pin Descriptions
CLK IGlobal clock network pin
Low skew global clock. This pin provides access to a
dedicated, distributed network capable of driving the CLOCK,
SET, RESET, F1, and A2 inputs to the Logic Cell, READ, and
WRITE CLOCKS, Read and Write Enables of the Embedded
RAM Blocks, CLOCK of the ECUs, and Output Enables of the
I/Os. The voltage tolerance of this pin is specified by VDED.
The voltage tolerance of the CLK pins in the PU101
package are specified by VCCIO(B).
I/O(A) I/O Input/Output pin
The I/O pin is a bi-directional pin, configurable to either an
input-only, output-only, or bi-directional pin. The A inside the
parenthesis means that the I/O is located in Bank A. If an I/O
is not used, SpDE (QuickWorks Tool) provides the option of
tying that pin to GND, VCC, or TriState.
VCC IPower supply pin Connect to 1.8 V supply.
VCCIO(A) IInput voltage tolerance pin
This pin provides the flexibility to interface the device with
either a 3.3 V, 2.5 V, or 1.8 V device. The A inside the
parenthesis means that VCCIO is located in BANK A. Every
I/O pin in Bank A will be tolerant of VCCIO input signals and
will drive VCCIO level output signals. This pin must be
connected to either 3.3 V, 2.5 V, or 1.8 V. VCCIO powers the
the PLLOUT pins.
GND I Ground pin Connect to ground.
PLLIN IPLL clock input Clock input for PLL. The voltage tolerance of this pin is
specified by VDED.
DEDCLK IDedicated clock pin
Very low skew global clock. This pin provides access to a
dedicated, distributed clock network capable of driving the
CLOCK inputs of all sequential elements of the device (e.g.,
RAM, Flip Flops). The voltage tolerance of this pin is
specified by VDED.
GNDPLL IGround pin for PLL Connect to GND.