DK-SI-5SGXEA7/ES Altera, DK-SI-5SGXEA7/ES Datasheet - Page 156
DK-SI-5SGXEA7/ES
Manufacturer Part Number
DK-SI-5SGXEA7/ES
Description
KIT DEV STRATIX V FPGA 5SGXEA7
Manufacturer
Altera
Series
Stratix® Vr
Type
FPGAr
Specifications of DK-SI-5SGXEA7/ES
Contents
Board
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
Stratix® V 5SGXEA7
Other names
544-2724
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4–16
Stratix V Device Handbook Volume 2: Device Interfaces and Integration
Clock Enable Signals
You can enable or disable the dedicated external clock output pins using the
ALTCLKCTRL megafunction.
control block.
Figure 4–12. External PLL Output Clock Control Block for Stratix V Devices
Notes to
(1) When the device is in user mode, you can only set the clock select signals through a configuration file (.sof or .pof);
(2) The clock control block feeds to a multiplexer within the FPLL_<#>_CLKOUT pin’s IOE. The FPLL_<#>_CLKOUT
Figure 4–13
is implemented in Stratix V devices.
Figure 4–13. clkena Implementation
Notes to
(1) The R1 and R2 bypass paths are not available for the PLL external clock outputs.
(2) The select line is statically controlled by a bit setting in the configuration file (.sof or .pof).
they cannot be dynamically controlled.
pin is a dual-purpose pin. Therefore, this multiplexer selects either an internal signal or the output of the clock control
block.
output of clock
Figure
Figure
select mux
shows how the clock enable and disable circuit of the clock control block
clkena
4–12:
4–13:
D
(1)
R1
Q
IOE
Internal
FPLL_<#>_CLKOUT pin
Logic
(2)
Figure 4–12
D
R2
PLL Counter
(1)
Q
Outputs
18
Enable/
Disable
shows the external PLL output clock
Chapter 4: Clock Networks and PLLs in Stratix V Devices
Internal
Static Clock
Select (1)
Logic
Static Clock Select
(2)
(1)
Clock Networks in Stratix V Devices
GCLK/
RCLK/
FPLL_<#>_CLKOUT (1)
May 2011 Altera Corporation
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