參數資料
型號: LAMXO640E-3FTN256E
廠商: Lattice Semiconductor Corporation
文件頁數: 31/77頁
文件大?。?/td> 0K
描述: IC FPGA 640LUTS 256TQFP
標準包裝: 90
系列: LA-MachXO
可編程類型: 系統(tǒng)內可編程
最大延遲時間 tpd(1): 4.9ns
電壓電源 - 內部: 1.14 V ~ 1.26 V
宏單元數: 320
輸入/輸出數: 159
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 256-LBGA
供應商設備封裝: 256-FTBGA(17x17)
包裝: 托盤
3-11
DC and Switching Characteristics
Lattice Semiconductor
LA-MachXO Automotive Family Data Sheet
For further information on LVPECL, BLVDS and other differential interfaces please see details of additional techni-
cal documentation at the end of the data sheet.
RSDS
The LA-MachXO automotive family supports the differential RSDS standard. The output standard is emulated
using complementary LVCMOS outputs in conjunction with a parallel resistor across the driver outputs on all the
devices. The RSDS input standard is supported by the LVDS differential input buffer on certain devices. The
scheme shown in Figure 3-4 is one possible solution for RSDS standard implementation. Use LVDS25E mode with
suggested resistors for RSDS operation. Resistor values in Figure 3-4 are industry standard values for 1% resis-
tors.
Figure 3-4. RSDS (Reduced Swing Differential Standard)
Table 3-4. RSDS DC Conditions
Parameter
Description
Typical
Units
ZOUT
Output impedance
20
ohm
RS
Driver series resistor
294
ohm
RP
Driver parallel resistor
121
ohm
RT
Receiver termination
100
ohm
VOH
Output high voltage
1.35
V
VOL
Output low voltage
1.15
V
VOD
Output differential voltage
0.20
V
VCM
Output common mode voltage
1.25
V
ZBACK
Back impedance
101.5
ohm
IDC
DC output current
3.66
mA
100
294
On-chip
Off-chip
Emulated
RSDS Buffer
VCCIO = 2.5V
8mA
Zo = 100
+
-
121
Off-chip
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