参数资料
型号: ORT82G51BM680-DB
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: FPGA
英文描述: FPGA, 1296 CLBS, 380000 GATES, PBGA680
封装: PLASTIC, FBGA-680
文件页数: 43/109页
文件大小: 1379K
代理商: ORT82G51BM680-DB
39
Lattice Semiconductor
Data Sheet
April, 2002
8b/10b SERDES Backplane Interface FPSC
ORCA ORT82G5 1.0-1.25/2.0-2.5/3.125-3.5 Gbits/s
Backplane Transceiver Core Detailed Description (continued)
ASB Memory Blocks
This section describes the memory blocks in the embedded core. Note that although the memory blocks are in the
embedded core part of the chip, they do not interact with the rest of the embedded core circuits. They are stand-
alone blocks designed specically to increase RAM capacity in the ORT82G5 chip, and will be used by the soft IP
cores in the FPGA.
There are two independent memory blocks in the embedded core. These are in addition to the block RAMs found in
the FPGA portion of the ORT82G5. A block diagram of a memory block is shown in Figure 16. Each memory block
has a capacity of 4K word by 36 bit. It has one read port and one write port and four byte-write-enable (active-low)
signals. The read data from the memory block is registered so that it works as a pipelined synchronous memory
block. A block diagram of the memory block in shown below in Figure 16.The minimum timing specications are
shown in Figure 18.
2270(F)
Figure 16. Block Diagram of Memory Block
4K x 36
MEMORY BLOCK
(1 OF 2)
D_x[35:0]
CKW_x
CSWA_x
CSWB_x
AW_x[10:0]
BYTEWN_x[3]
BYTEWN_x[2]
BYTEWN_x[1]
BYTEWN_x[0]
BW[35,31:24]
BW[34,23:16]
BW[33,15:8]
BW[32,7:0]
CKR_x
CSR_x
AR_x[10:0]
Q_x[35:0]
WRITE PORTS
READ PORTS
相关PDF资料
PDF描述
OSC-1B1FREQ TCVCXO, CLIPPED SINE OUTPUT, 10 MHz - 50 MHz
OSC-3A110MHZ TCVCXO, CLIPPED SINE OUTPUT, 10 MHz
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