LFE2-20E-5FN256I Lattice, LFE2-20E-5FN256I Datasheet - Page 430

• Manufacturer Part Number: LFE2-20E-5FN256I
• Description: IC FPGA 21KLUTS 193I/O 256FPBGA
• Manufacturer: Lattice
• Series: ECP2r

Specifications of LFE2-20E-5FN256I

• Number Of Logic Elements/cells: 21000
• Number Of Labs/clbs: 2625
• Total Ram Bits: 282624
• Number Of I /o: 193
• Number Of Gates: -
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 256-BGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 220-1170; LFE2-20E-5FN256I; Q6411457

Lattice Semiconductor
Figure 8-17. PCS Clock Domain Transfers for Non-CTC Modes
To guarantee a synchronous interface, both the input transmit clocks and input receive clock should be driven from
one of the output reference clocks for a PCS quad set to Generic 8b10b mode. Figure 8-18 illustrates the possible
connections that would result in a synchronous interface.
hdin(n/p)_0
Transmit Path
Receive Path
SERIALIZER
DESERIALIZER
REFERENCE
CLOCK
CLOCK
CDR/
TO
PLL
DATA
ENCODER
MACHINE
DECODE
8-25
WORD
STATE
ALIGN
8b10b
8b10b
LINK
LatticeECP2M SERDES/PCS Usage Guide
DATA OUT
READ
CLOCK
DATA IN
WRITE
CLOCK
INTERFACE
INTERFACE
TRANSMIT
RECEIVE
FPGA
FPGA
FIFO
FIFO
DATA OUT
DATA IN
CLOCK
CLOCK
WRITE
READ
ff_txdata_ch0
ff_rxdata_ch0
ff_txiclk_ch0
ff_rxiclk_ch0