参数资料
型号: M-ORSO82G51BM680-DB
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
英文描述: FPGA, 1296 CLBS, 333000 GATES, PBGA680
封装: PLASTIC, FBGA-680
文件页数: 50/123页
文件大小: 2207K
代理商: M-ORSO82G51BM680-DB
Lattice Semiconductor
ORCA ORSO82G5 Data Sheet
32
SONET Mode Transmit Path
The transmit block performs the following functions in SONET mode:
A1 and A2 insertion and optional corruption
BIP-8 parity calculation, B1 byte insertion and optional corruption. (B1 byte is inverted.)
Performs RDI insertion (K2 byte is set to “0000 0110”).
Scrambling of outgoing data with optional scrambler disabling.
In either STS-192 or STS-48 mode, each link operates at an STS-48 rate.
TX Frame Processor
The Tx_Frame_Processor (TFP) block is the primary data processing block in the both SONET mode and cell
mode. It organizes the cell data into a SONET frame before sending it to the SERDES. The TFP is on the TSY-
CLKxx clock domain (77.76 MHz). In SONET mode, the 32-bit data comes from the FPGA interface. (In cell mode
the data comes from the cell processing block as described in the cell mode section) The TFP block contains three
major sub-blocks: payload block, TOH block and scrambler block. The interfaces for the TFP block are shown in
Figure 18. TX Frame Processor (TFP) Block Diagram
MUX
Block
LDIN(7:0)
XCK311
PAYLOAD
BLOCK
TRANSPORT
OVERHEAD
BLOCK
SCRAMBLE
LOGIC
32-bit payload
scramble_disable
TX_FRM_PROC
Interface
SERDES
32-bit TOH data
Error
injection
controls
Cell Mode
FPGA INTERFACE (SONET MODE)
DINxy_FP
scramble_out (31:0)
Frame Pulse
DINxy[31:0]
data
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