参数资料
型号: LFXP15C-4FN256C
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
中文描述: FPGA, 1932 CLBS, PBGA256
封装: 17 X 17 MM, LEAD FREE, FPBGA-256
文件页数: 35/130页
文件大小: 1312K
代理商: LFXP15C-4FN256C
2-10
Architecture
Lattice Semiconductor
LatticeXP Family Data Sheet
Figure 2-10. PLL Diagram
Figure 2-11 shows the available macros for the PLL. Table 2-11 provides signal description of the PLL Block.
Figure 2-11. PLL Primitive
Table 2-5. PLL Signal Descriptions
Signal
I/O
Description
CLKI
I
Clock input from external pin or routing
CLKFB
I
PLL feedback input from CLKOP (PLL internal), from clock net (CLKOP) or from a user clock
(PIN or logic)
RST
I
“1” to reset input clock divider
CLKOS
O
PLL output clock to clock tree (phase shifted/duty cycle changed)
CLKOP
O
PLL output clock to clock tree (No phase shift)
CLKOK
O
PLL output to clock tree through secondary clock divider
LOCK
O
“1” indicates PLL LOCK to CLKI
DDAMODE
I
Dynamic Delay Enable. “1” Pin control (dynamic), “0”: Fuse Control (static)
DDAIZR
I
Dynamic Delay Zero. “1”: delay = 0, “0”: delay = on
DDAILAG
I
Dynamic Delay Lag/Lead. “1”: Lag, “0”: Lead
DDAIDEL[2:0]
I
Dynamic Delay Input
DDAOZR
O
Dynamic Delay Zero Output
DDAOLAG
O
Dynamic Delay Lag/Lead Output
DDAODEL[2:0]
O
Dynamic Delay Output
VCO
CLKOS
CLKOK
LOCK
RST
CLKFB
from CLKOP
(PLL internal),
from clock net
(CLKOP) or
from a user
clock (PIN or logic)
Dynamic Delay Adjustment
Input Clock
Divider
(CLKI)
Feedback
Divider
(CLKFB)
Post Scalar
Divider
(CLKOP)
Phase/Duty
Select
Secondary
Clock
Divider
(CLKOK)
Delay
Adjust
Voltage
Controlled
Oscillator
CLKI
(from routing or
external pin)
CLKOP
EPLLB
CLKOP
CLKI
CLKFB
LOCK
EHXPLLB
CLKOS
CLKI
CLKFB
CLKOK
LOCK
RST
CLKOP
DDAIZR
DDAILAG
DDA MODE
DDAIDEL[2:0]
DDAOZR
DDAOLAG
DDAODEL[2:0]
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