参数资料
型号: ORSO42G5-EV
厂商: Lattice Semiconductor Corporation
文件页数: 126/153页
文件大小: 0K
描述: BOARD EVAL DEV PLATFORM ORSO42G5
标准包装: 1
系列: ORCA® 4 系列
类型: FPGA
适用于相关产品: ORSO42G5
所含物品: 板,线缆,电源
其它名称: ORSO42G5EV
Lattice Semiconductor
ORCA ORSO42G5 and ORSO82G5 Data Sheet
74
Table 17. Decoding of SCHAR_CHAN
The receive characterization test mode is entered when SCHAR_ENA=1 and SCHAR_TXSEL=0, In this mode,
one of the channels of SERDES outputs is observed at chip ports as shown in Table 18. The channel that is
observed is also based on the decoding of SCHAR_CHAN as shown in Table 18.
Table 18. SERDES Receive Characterization Mode
Embedded Core Block RAM
There are two independent memory slices (labeled A and B) in the embedded core. Each memory slice has a
capacity of 4K words by 36 bits. These are in addition to the block RAMs found in the FPGA portion of the
ORSO42G5 and ORSO82G5. Although the memory slices are in the embedded core part of the chip, they do not
interact with the rest of the embedded core circuits, but are standalone memories designed specically to increase
RAM capacity in the ORSO42G5 and ORSO82G5 chip. They can be used by the soft IP cores implemented in the
FPGA portion of the FPSC.
A block diagram of a memory slice is shown in Figure 48. Each memory slice is organized into two sections
(labeled SRAM A and SRAM B) and has one read port, one write port and four byte-write-enable (active-low) sig-
nals. Each byte has eight data bits and a control/parity bit. The control/parity bit responds to the same byte enable
(BYTEWN_x[x]) as it’s corresponding data. No special logic such as parity checking is performed on this bit by the
core. The read data from the memory is registered so that it works as a pipelined synchronous memory block. The
minimum timing specications are shown in Figure 49 and Figure 50. Signal names and functions are summarized
later in Table 19 and follow the general Series 4 naming conventions.
SCHAR_CHAN0
SCHAR_CHAN1
Channel
0
BA
1
0
BB
0
1
BC
1
BD
SERDES Output
Chip Port
LDOUTBx[9:0]
PSCHAR_LDIO[9:0]
RBC0Bx
PSCHAR_CKIO0
RBC1Bx
PSCHAR_CKIO1
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