参数资料
型号: EP2C20F256I6N
厂商: ALTERA CORP
元件分类: FPGA
英文描述: FPGA, 1196 CLBS, PBGA256
封装: LEAD FREE, FBGA-256
文件页数: 55/168页
文件大小: 2206K
代理商: EP2C20F256I6N
5–58
Altera Corporation
Cyclone II Device Handbook, Volume 1
February 2008
Timing Specifications
In order to determine the transmitter timing requirements, RSDS receiver
timing requirements on the other end of the link must be taken into
consideration. RSDS receiver timing parameters are typically defined as
tSU and tH requirements. Therefore, the transmitter timing parameter
specifications are tCO (minimum) and tCO (maximum). Refer to Figure 5–4
for the timing budget.
The AC timing requirements for RSDS are shown in Figure 5–5.
TCCS
200
200
200
ps
Output
jitter (peak
to peak)
500
500
500
ps
tRISE
20–80%,
CLOAD = 5 pF
500
500
500
ps
tFALL
80–20%,
CLOAD = 5 pF
500
500
500
ps
tLOCK
100
100
100
μs
(1)
These specifications are for a three-resistor RSDS implementation. For single-resistor RSDS in ×10 through ×2
modes, the maximum data rate is 170 Mbps and the corresponding maximum input clock frequency is 85 MHz.
For single-resistor RSDS in ×1 mode, the maximum data rate is 170 Mbps, and the maximum input clock frequency
is 170 MHz. For more information about the different RSDS implementations, refer to the High-Speed Differential
Interfaces in Cyclone II Devices chapter of the Cyclone II Device Handbook.
Table 5–48. RSDS Transmitter Timing Specification (Part 2 of 2)
Symbol
Conditions
–6 Speed Grade
–7 Speed Grade
–8 Speed Grade
Unit
Min
Typ
Max(1)
Min
Typ
Max(1)
Min
Typ
Max(1)
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