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| 型號(hào)： | EPM9320ALI84-10 |
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16
Altera Corporation
MAX 9000 Programmable Logic Device Family Data Sheet
Figure 9. MAX 9000 Column-to-IOC Connections
Dedicated Inputs
In addition to the general-purpose I/O pins, MAX 9000 devices have four
dedicated input pins. These dedicated inputs provide low-skew, device-
wide signal distribution to the LABs and IOCs in the device, and are
typically used for global clock, clear, and output enable control signals.
The global control signals can feed the macrocell or IOC clock and clear
inputs, as well as the IOC output enable. The dedicated inputs can also be
used as general-purpose data inputs because they can feed the row
FastTrack Interconnect (see Figure 2 on page 7).
I/O Cells
Figure 10 shows the IOC block diagram. Signals enter the MAX 9000
device from either the I/O pins that provide general-purpose input
capability or from the four dedicated inputs. The IOCs are located at the
ends of the row and column interconnect channels.
48
Each IOC is driven by
a 17-to-1 multiplexer.
Each IOC can drive up
to two column
channels.
17
Column FastTrack
Interconnect
IOC10
IOC1
48
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