参数资料
型号: IP-SLITE2
厂商: Altera
文件页数: 26/110页
文件大小: 0K
描述: IP SERIALLITE II
标准包装: 1
系列: *
类型: MegaCore
功能: SerialLite II 协议
许可证: 初始许可证
Chapter 3: Parameter Settings
Physical Layer Configuration
Table 3–2. Data Rate Dependencies on Transfer Size (Part 2 of 2)
Data Rate
Devices
3–3
2.5 Gbps
3.125 Gbps
3.75 Gbps
5 Gbps
6.375 Gbps
Stratix V
TSIZE= 1, 2
TSIZE= 2
4
TSIZE= 2
4
TSIZE= 2
4
TSIZE= 4
Note to Table 3–2 :
(1) Symmetric mode ( p_RX_NUM_LANE S == p_TX_NUM_LANE S ) only.
The data rates for an individual Arria II GX device are limited to the respective speed
grades, refer to Table 3–3 .
Table 3–3. Arria II GX Speed Grade-Data Rate Limits
Device Speed Grade
C4
C5
C6
Minimum Data Rate (Mbps)
600
600
600
Maximum Data Rate (Mbps)
3,750
3,125
3,125
Transfer size
The Transfer size parameter defines many important characteristics of the MegaCore
function variation. Transfer size determines the number of contiguous data columns
and the internal data path width per lane, where:
A transfer size of 1 equates to an internal data path of 8 bits (Recommended for
less than 2.5 Gbps)
A transfer size of 2 equates to an internal data path of 16 bits (Recommended for
less than or equal to 3.125 Gbps)
A transfer size of 4 equates to an internal data path of 32 bits (only available for
Stratix IV FPGA with transfer size greater than 3.125 Gbps, and must be used
when the data rate exceeds 5 Gbps)
A transfer size determines the width of the SERDES block, where:
A transfer size of 1 equates to a 10 bit-wide SERDES block
A transfer size of 2 equates to a 20 bit-wide SERDES block
A transfer size of 4 equates to a 40-bit wide SERDES block
Reference Clock Frequency
The Reference Clock Frequency parameter defines the frequency of the reference
clock for the Arria II GX or Stratix IV internal transceiver. Valid values change with
the data rate but the reference input clock frequency must be within 50 MHz and 622
MHz.
The general formula to determine frequency:
Frequency = p×Data Rate/(2×m), where p = 1 or 2, and m = 4, 5, 8, 10, 16, 20, or 25
Condition for frequency to be valid: (50×p) < Frequency < 622
This parameter is only applicable if you chose Arria II GX or Stratix IV devices.
January 2014
Altera Corporation
SerialLite II MegaCore Function
User Guide
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