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5–14
Chapter 5: Clock Networks and PLLs in Cyclone IV Devices
Clock Networks
October 2012
Altera Corporation
The inputs to the clock control blocks on each side of the Cyclone IV GX device must
be chosen from among the following clock sources:
■
Four clock input pins
■
Ten PLL counter outputs (five from each adjacent PLLs)
■
Two, four, or six
DPCLK
pins from the top, bottom, and right sides of the device
■
Five signals from internal logic
Figure 5–4. Clock Networks and Clock Control Block Locations in Cyclone IV E Devices
Notes to
(1) There are five clock control blocks on each side.
(2) Only one of the corner
CDPCLK
pins in each corner can feed the clock control block at a time. You can use the other
CDPCLK
pins as
general-purpose I/O (GPIO) pins
.
(3) Dedicated clock pins can feed into this PLL. However, these paths are not fully compensated.
(4)
PLL_3
and
PLL_4
are not available in EP4CE6 and EP4CE10 devices.
PLL_1
PLL_4
PLL_2
PLL_3
20
20
20
20
4
4
4
4
3
4
4
4
2
2
2
2
2
2
2
2
5
5
5
5
(2)
(2)
(2)
(2)
CDPCLK7
CDPCLK0
CDPCLK1
DPCLK1
DPCLK[11.10]
DPCLK[9..8]
CLK[11..8]
CDPCLK6
DPCLK0
CLK[3..1]
GCLK[19..0]
GCLK[19..0]
CDPCLK5
DPCLK7
CLK[7..4]
DPCLK6
CDPCLK4
CDPCLK2
DPCLK[3..2]
CLK[15..12]
DPCLK[5..4]
CDPCLK3
4
4
4
4
(3)
(3)
(3)
(4)
(4)
(3)
Clock
Control
Block
(1)
Clock
Control
Block
(1)
Clock
Control
Block
(1)
Clock
Control
Block
(1)
Содержание Cyclone IV
Страница 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 106: ...II 2 Section II I O Interfaces Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 164: ...III 2 Section III System Integration Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 276: ...viii Chapter Revision Dates Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 280: ...I 2 Section I Transceivers Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Страница 442: ...vi Chapter Revision Dates Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
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