OR2T15B7BA352-DB View Datasheet(PDF) - Lattice Semiconductor
Part Name
Description
Manufacturer
OR2T15B7BA352-DB Datasheet PDF : 200 Pages
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ORCA Series 2 FPGAs
Data Sheet
November 2006
Interquad Routing (continued)
All of the inter-PLC routing resources discussed previ-
ously continue to be routed between a PLC and its
Subquad Routing (OR2C40A/OR2T40A Only) adjacent PLC, even if the two adjacent PLCs are in dif-
ferent subquad blocks. Since the PLC routing has not
In the ORCA OR2C40A/OR2T40A/OR2T40B, each
been modified for the OR2C40A/OR2T40A architec-
quadrant of the device is split into smaller arrays of
PLCs called subquads. Each of these subquads is
made of a 4 x 4 array of PLCs (for a total of 16 per sub-
quadrant), except at the outer edges of array, which
S have less than 16 PLCs per subquad. New routing
resources, called subquad lines, have been added
between each adjacent pair of subquads to enhance
E the routability of the device. A portion of the center of
the OR2C40A and OR2T40A array is shown in Figure
30, including the subquad blocks containing a 4 x 4
IC array of PLCs, the interquad routing lines, and the sub-
quad routing lines.
tures, this means that all of the same routing connec-
tions are possible for these devices as for any other
ORCA 2C series device. In this way, both the
OR2C40A and OR2T40A/OR2T40B are upwardly com-
patible when compared with the ATT2Cxx series
devices. As the inter-PLC routing runs between sub-
quad blocks, it crosses the new subquad lines. When
this happens, CIPs are used to connect the subquad
lines to the X4 and/or the XH lines which lie along the
other axis of the PLC array.
DEVINUED SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
CT NT SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
ELE CO SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
S IS SUBQUAD
D(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SUBQUAD
(4 x 4 PLCs)
SEE DETAIL
IN FIGURES 25
AND 26
HORIZONTAL
INTERQUAD
ROUTING
(hIQ)
HORIZONTAL
SUBQUAD
ROUTING
(HSUB)
VERTICAL
SUBQUAD
ROUTING
(VSUB)
VERTICAL
INTERQUAD
ROUTING
(vIQ)
5-4200(F).r5
Figure 30. Subquad Blocks and Subquad Routing
36
Lattice Semiconductor
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