LFE3-95EA-8FN672I Lattice, LFE3-95EA-8FN672I Datasheet - Page 12

• Manufacturer Part Number: LFE3-95EA-8FN672I
• Description: IC FPGA 92KLUTS 380I/O 672-BGA
• Manufacturer: Lattice

Specifications of LFE3-95EA-8FN672I

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Lattice Semiconductor
Table 2-5. DLL Signals
LatticeECP3 devices have two general DLLs and four Slave Delay lines, two per DLL. The DLLs are in the lowest
EBR row and located adjacent to the EBR. Each DLL replaces one EBR block. One Slave Delay line is placed adja-
cent to the DLL and the duplicate Slave Delay line (in Figure 2-6) for the DLL is placed in the I/O ring between
Banks 6 and 7 and Banks 2 and 3.
The outputs from the DLL and Slave Delay lines are fed to the clock distribution network.
For more information, please see TN1178,
Figure 2-6. Top-Level Block Diagram, High-Speed DLL and Slave Delay Line
CLKI
CLKFB
RSTN
ALUHOLD
UDDCNTL
CLKOP
CLKOS
LOCK
INCI
GRAYI[5:0]
DIFF
INCO
GRAYO[5:0]
Top ECLK1 (L) OR Top ECLK2 (R)
Signal
TPIO0 (L) OR TPIO1 (R)
Internal from CLKOP
GRAY_IN[5:0]
FB CIB (CLK)
GDLLFB_PIO
CIB (DATA)
I/O
GDLL_PIO
GPLL_PIO
O
O
O
O
O
O
UDDCNTL
DCPS[5:0]
CIB (CLK)
I
I
I
I
I
I
I
INC_IN
ECLK1
GSRN
HOLD
RSTN
Clock input from external pin or routing
Active high freezes the ALU
Synchronous enable signal (hold high for two cycles) from routing
The primary clock output
The secondary clock output with fine delay shift and/or division by 2 or by 4
Gray-coded digital control bus from another DLL in time reference mode.
Difference indicator when DCNTL is difference than the internal setting and update is needed.
Gray-coded digital control bus to other DLLs via CIB
DLL feed input from DLL output, clock net, routing or external pin
Active low synchronous reset
Active high phase lock indicator
Incremental indicator from another DLL via CIB.
Incremental indicator to other DLLs via CIB.
* This signal is not user accessible. It can only be used to feed the slave delay line.
LatticeECP3 sysCLOCK PLL/DLL Design and Usage
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
CLKI
CLKFB
CLKI
2-9
High-Speed DLL
Slave Delay Line
LatticeECP3
DCNTL[5:0]
Description
LatticeECP3 Family Data Sheet
CLKOP
CLKOS
LOCK
GRAY_OUT[5:0]
INC_OUT
DIFF
DCNTL[5:0]*
CLKO (to edge clock
muxes as CLKINDEL)
Guide.
Architecture