OR3T125 Agere Systems, OR3T125 Datasheet - Page 49
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OR3T125
Manufacturer Part Number
OR3T125
Description
3C and 3T Field-Programmable Gate Arrays
Manufacturer
Agere Systems
Datasheet
1.OR3T125.pdf
(210 pages)
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Data Sheet
June 1999
High-Level Routing Resources
PIC Interquad (MID) Routing
There is also connectivity between the PICs in each
quadrant, as well as a clock control (CLKCNTRL) mod-
ule (discussed in the Special Function Blocks section)
between the PIC routing and the interquad routing.
These blocks are called LMID (left), TMID (top), RMID
(right), and BMID (bottom). The TMID routing is shown
in Figure 30. As with the hIQ and vIQ blocks, the only
connectivity to the PIC routing is to the global pxH and
px5 segments.
Lucent Technologies Inc.
EXPRESSCLK LEFT
Figure 30. Top (TMID) Routing
(continued)
SHUTOFF
The pxH segments from the one quadrant can be con-
nected through a CIP to its counterpart in the opposite
quadrant, providing a path that spans the array of
PICs. Since a passive CIP is used to connect the two
pxH segments, a 3-state signal can be routed on the
two pxH segments in the opposite quadrants, and then
connected through this CIP. As with the hIQ and vIQ
blocks, CIPs and buffers allow nibble-wide connections
between the interquad segments, the xH segments,
and the x5 segments.
ORCA Series 3C and 3T FPGAs
EXPRESSCLK RIGHT
PIC LOCAL CLOCKS
FROM RIGHT
PIC LOCAL CLOCKS
FROM LEFT
pxL[9:0]
pxH[7:0]
px5[9:0]
px2[4:0]
px1[4:0]
pSW[7:4]
pSW[3:0]
pSW[7:4]
pSW[3:0]
in2[A:D] FROM LEFT
in[A:D] FROM RIGHT
CORNER ExpressCLK
5-5822(F)
49
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