RSENC-DBLK-P2-U4 Lattice, RSENC-DBLK-P2-U4 Datasheet - Page 14

• Manufacturer Part Number: RSENC-DBLK-P2-U4
• Description: Encoders, Decoders, Multiplexers & Demultiplexers Dynamic Block Reed Solomon Encoder
• Manufacturer: Lattice

Specifications of RSENC-DBLK-P2-U4

• Factory Pack Quantity: 1

Lattice Semiconductor
IPUG40_03.6, August 2010
Figure 2-4
encoder. The handshake signals are identical to normal operation, but the output is shifted due to the extra bypass
data.
Figure 2-4. Timing of an RS (7,3) Double Pipelined Encoder with byp Asserted
Figure 2-5
tion of the encoder. The de-assertion of enable results in corresponding invalid outputs happening after a few
cycles determined by the output latency and indicated by outvalid going low. When outvalid is low, the output
handshake signals maintain their last state.
Figure 2-5. Timing of an RS (7,3) Double Pipelined Encoder with enable De-asserted
Figure 2-6
tion of the encoder. The handshake signal rfi goes high to indicate the encoder is ready to receive a new set of
data when ibstart is re-asserted during encoding.
shows the timing of an RS (7,3) double pipelined encoder with byp asserted during the operation of the
shows the timing of an RS (7,3) double pipelined encoder with ibstart re-asserted during the opera-
shows the timing of an RS (7,3) double pipelined encoder with enable de-asserted during the opera-
outvalid
outvalid
enable
enable
ibstart
ibstart
status
status
dout
dout
rstn
rstn
byp
byp
clk
din
clk
din
rfi
rfi
D00
D00
D01
D01
D02
D02
D00
DBP
D00
X
14 Dynamic Block Reed-Solomon Encoder User’s Guide
D01
D01
X
X
D02
D02
X
X
DBP
D02
X
X
C00
C00
X
X
Functional Description
C01
C01
D10
D10
D11
C02
D11
C02