参数资料
型号: XC6SLX25T-2FG484I
厂商: Xilinx Inc
文件页数: 61/89页
文件大小: 0K
描述: IC FPGA SPARTAN 6 484FGGBGA
标准包装: 60
系列: Spartan® 6 LXT
LAB/CLB数: 1879
逻辑元件/单元数: 24051
RAM 位总计: 958464
输入/输出数: 250
电源电压: 1.14 V ~ 1.26 V
安装类型: 表面贴装
工作温度: -40°C ~ 100°C
封装/外壳: 484-BBGA
供应商设备封装: 484-FBGA
Spartan-6 FPGA Data Sheet: DC and Switching Characteristics
DS162 (v3.0) October 17, 2011
Product Specification
64
Table 59: Switching Characteristics for the Phase-Shift Clock in Variable Phase Mode(1)
Symbol
Description
Amount of Phase Shift
Units
Phase Shifting Range
When CLKIN < 60 MHz, the maximum allowed
number of DCM_DELAY_STEP steps for a
given CLKIN clock period, where T = CLKIN
clock period in ns. When using
CLKIN_DIVIDE_BY_2 = TRUE, double the
clock-effective clock period.
±(INTEGER(10 x (TCLKIN – 3 ns)))
steps
When CLKIN
60 MHz, the maximum allowed
number of DCM_DELAY_STEP steps for a
given CLKIN clock period, where T = CLKIN
clock period in ns. When using
CLKIN_DIVIDE_BY_2 = TRUE, double the
clock-effective clock period.
±(INTEGER(15 x (TCLKIN – 3 ns)))
steps
FINE_SHIFT_RANGE_MIN
Minimum guaranteed delay for variable phase
shifting.
±(MAX_STEPS x DCM_DELAY_STEP_MIN)
ps
FINE_SHIFT_RANGE_MAX
Maximum guaranteed delay for variable phase
shifting
±(MAX_STEPS x DCM_DELAY_STEP_MAX)
ps
Notes:
1.
The values in this table are based on the operating conditions described in Table 53 and Table 58.
2.
The maximum variable phase shift range, MAX_STEPS, is only valid when the DCM has no initial fixed-phase shifting, that is, the PHASE_SHIFT
attribute is set to 0.
3.
The DCM_DELAY_STEP values are provided at the end of Table 54.
Table 60: Miscellaneous DCM Timing Parameters(1)
Symbol
Description
Min
Max
Units
DCM_RST_PW_MIN
Minimum duration of a RST pulse width
3
CLKIN cycles
Notes:
1.
This limit only applies to applications that use the DCM DLL outputs (CLK0, CLK90, CLK180, CLK270, CLK2X, CLK2X180, and CLKDV). The DCM
DFS outputs (CLKFX, CLKFXDV, CLKFX180) are unaffected.
Table 61: Frequency Synthesis
Attribute
Min
Max
CLKFX_MULTIPLY (DCM_SP)
2
32
CLKFX_DIVIDE (DCM_SP)
1
32
CLKDV_DIVIDE (DCM_SP)
1.5
16
CLKFX_MULTIPLY (DCM_CLKGEN)
2
256
CLKFX_DIVIDE (DCM_CLKGEN)
1
256
CLKFXDV_DIVIDE (DCM_CLKGEN)
2
32
Table 62: DCM Switching Characteristics
Symbol
Description
Speed Grade
Units
-3
-3N
-2
-1L
TDMCCK_PSEN/ TDMCKC_PSEN
PSEN Setup/Hold
1.50/
0.00
1.50/
0.00
1.50/
0.00
1.50/
0.00
ns
TDMCCK_PSINCDEC/ TDMCKC_PSINCDEC
PSINCDEC Setup/Hold
1.50/
0.00
1.50/
0.00
1.50/
0.00
1.50/
0.00
ns
TDMCKO_PSDONE
Clock to out of PSDONE
1.50
ns
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