参数资料
型号: EPF10K200S
英文描述: Programmable Logic
中文描述: 可编程逻辑
文件页数: 65/138页
文件大小: 2116K
代理商: EPF10K200S
32
Altera Corporation
FLEX 10K Embedded Programmable Logic Family Data Sheet
Signals on the peripheral control bus can also drive the four global signals,
referred to as GLOBAL0 through GLOBAL3 in Tables 8 and 9. The internally
generated signal can drive the global signal, providing the same
low-skew, low-delay characteristics for an internally generated signal as
for a signal driven by an input. This feature is ideal for internally
generated clear or clock signals with high fan-out. When a global signal is
driven by internal logic, the dedicated input pin that drives that global
signal cannot be used. The dedicated input pin should be driven to a
known logic state (such as ground) and not be allowed to float.
When the chip-wide output enable pin is held low, it will tri-state all pins
on the device. This option can be set in the Global Project Device Options
menu. Additionally, the registers in the IOE can be reset by holding the
chip-wide reset pin low.
Row-to-IOE Connections
When an IOE is used as an input signal, it can drive two separate row
channels. The signal is accessible by all LEs within that row. When an IOE
is used as an output, the signal is driven by a multiplexer that selects a
signal from the row channels. Up to eight IOEs connect to each side of
each row channel. See Figure 14.
Figure 14. FLEX 10K Row-to-IOE Connections
n
Each IOE is driven by an
m-to-1 multiplexer.
Each IOE can drive up to two
row channels.
IOE8
IOE1
m
Row FastTrack
Interconnect
n
The values for m and n are provided in Table 10.
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