DS694 Datasheet, PDF (2/4 Pages) Xilinx, Inc – Utility IO Multiplexer

Utility IO Multiplexer (v1.00a)
Functional Description
The block diagram for the Utility IO Multiplexer is shown in Figure 1.
X-Ref Target - Figure 1
I0(0:C_SIZE-1)
I1(0:C_SIZE-1)
IO_O[0:SIZE_C-1]
O0(0:C_SIZE-1)
0
IO_O[0:SIZE_C-1]
O1(0:C_SIZE-1)
1
T
S
T0(0:C_SIZE-1)
0
IO_O[0:SIZE_C-1]
IO_T[0:SIZE_C-1]
T1(0:C_SIZE-1)
1
DS694_01_100609
Figure 1: Utility IO Multiplexer Block Diagram
Utility IO Multiplexer I/O Signals
The Utility IO Multiplexer provides a way of selecting which of two IO vectors should be connected to
one IO vector. The size of the vectors is determined by the parameter C_SIZE, which has the minimum
value 1.
Table 1: Utility I/O Multiplexer Signal Descriptions
Signal Name
I/O Initial State
Description
I0
O
Input vector 0 [0:C_SIZE-1]
O0
I
Output vector 0 [0:C_SIZE-1]
T0
I
Tristate disable vector 0 [0:C_SIZE-1
I1
O
Input vector 1 [0:C_SIZE-1]
T1
I
Tristate disable vector 1 [0:C_SIZE-1
S
I
Input select signal.
0 : O0 and T0 drives, IO_O and IO_T respectively
1 : O1 and T1 drives, IO_O and IO_T respectively
IO_I
I
IO input vector [0:C_SIZE-1]
IO_O
O
IO output vector [0:C_SIZE-1]
IO_T
O
IO tristate disable vector [0:C_SIZE-1]
IO
IO
IO tristate vector [0:C_SIZE-1]
2
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DS694 December 2, 2009
Product Specification