參數(shù)資料
型號(hào): DSF10K
廠商: Altera Corporation
英文描述: EMBEDDED PROGRAMMABLE LOGIC FAMILY
中文描述: 嵌入式可編程邏輯系列
文件頁數(shù): 37/138頁
文件大?。?/td> 2116K
代理商: DSF10K
Altera Corporation
37
FLEX 10K Embedded Programmable Logic Family Data Sheet
Figure 17. Enabling ClockLock & ClockBoost in the Same Design
To use both the ClockLock and ClockBoost circuits in the same design,
designers must use Revision C EPF10K100GC503-3DX devices and
MAX+PLUS II software versions 7.2 or higher. The die revision is
indicated by the third digit of the nine-digit code on the top side of the
device.
f
For more information on using the ClockLock and ClockBoost features,
see the
Clock Management with ClockLock & ClockBoost
Features White Paper
,
which is available from Altera Literature Services.
Output
Configuration
This section discusses the peripheral component interconnect (PCI)
pull-up clamping diode option, slew-rate control, open-drain output
option, MultiVolt I/O interface, and power sequencing for FLEX 10K
devices. The PCI pull-up clamping diode, slew-rate control, and
open-drain output options are controlled pin-by-pin via MAX+PLUS II
logic options. The MultiVolt I/O interface is controlled by connecting
V
CCIO
to a different voltage than V
CCINT
. Its effect can be simulated in the
MAX+PLUS II software via the
Global Project Device Options
dialog
box (Assign menu).
PCI Clamping Diodes
The EPF10K10A and EPF10K30A devices have a pull-up clamping diode
on every I/O, dedicated input, and dedicated clock pin. PCI clamping
diodes clamp the transient overshoot caused by reflected waves to the
V
CCIO
value and are required for 3.3-V PCI compliance. Clamping diodes
can also be used to limit overshoot in other systems.
D
Q
D
Q
a
b
aout
bout
gclk1
CLKLOCK
CLKLOCK
CLOCKBOOST=1
INPUT_FREQUENCY=50
CLOCKBOOST=2
INPUT_FREQUENCY=50
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