参数资料
型号: HW-SPAR3AN-SK-UNI-G
厂商: Xilinx Inc
文件页数: 138/140页
文件大小: 0K
描述: KIT STARTER SPARTAN-3 AN
产品变化通告: Adapter Replacement 23/May/2008
标准包装: 1
系列: Spartan®-3AN
类型: FPGA
适用于相关产品: Spartan-3AN XC3S700AN-FG484,XCF04S-VOG20C
所含物品: 面板、缆线、软件、数据表和用户手册
相关产品: XC3S700AN-5FGG484C-ND - IC FPGA SPARTAN-3A 700K 484-FBGA
122-1598-ND - IC FPGA SPARTAN -3AN700K 484FBGA
122-1556-ND - IC SPARTAN-3AN FPGA 700K 484FBGA
其它名称: 122-1528
HW-SPAR3AN-SK-UNI-G-PROMO
HW-SPAR3AN-SK-UNI-G-PROMO-ND
Chapter 17: Voltage Supplies
Caution! If the meter offers various current ranges, always start with the largest range first.
Passing too large a current through a meter may damage it.
R
?
?
?
?
Reapply power to the board.
Record the current measurements across the jumper.
If the FPGA design supports the power-saving Suspend mode, measure the current
with the SUSPEND switch (see “SUSPEND Switch,” page 26 ) set in both the “RUN”
and “SUSPEND” positions. The default FPGA application shipped with the Starter
Kit board does use the Suspend mode. For additional information on the Suspend
mode, see the “ Power Management Solutions ” chapter in UG331 : Spartan-3 Generation
FPGA User Guide .
Convert the current measurement (Amperes or mA) to a power measurement (Watts
or mW), by multiplying the measured result by the supply voltage.
I 2 C Voltage Adjustment Interface
Each LP3906 regulator has an two-wire, I 2 C serial interface that optionally controls various
functions, such as the regulator output voltage. As indicated in Table 17-3 , the I 2 C interface
can be controlled by the FPGA application using the I/O pins indicated or by some
external controller using the through-hole mounting pads provided on the board, shown
Table 17-3:
I 2 C Voltage Adjustment Interface to Regulator
Regulator
IC18
IC19
I 2 C Control Input
SCL
SDA
SCL
SDA
FPGA Connection
REG2_SCL
(D11)
REG2_SDA
(F13)
REG1_SCL
(E13)
REG1_SDA
(D13)
Through-Hole
Connection
REG2-SCL
REG2-SDA
REG1-SCL
REG1-SDA
Possible Applications
For experimentation purposes only, Xilinx only recommends adjusting the two supplies
listed below:
138
?
?
By default, the V CCAUX supply to the FPGA is set to 3.3V, as required for Spartan-3AN
FPGAs. On Spartan-3A FPGAs, V CCAUX can be either 2.5V or 3.3V, with potentially
lower power consumption at 2.5V. Consequently, V CCAUX can be reduced to 2.5V by
adjusting the LDO1 output on the LP3906 regulator designated IC19. The
corresponding I 2 C control signals are REG1_SCL and REG1_SDA.
By default, the reference voltage to Channels C and D on the D/A converter is 3.3V.
However, this voltage can be adjusted to between 1.0V and 3.3V by controlling the
LDO1 output on IC18. The corresponding I 2 C control signals are REG2_SCL and
REG2_SDA. See Chapter 10, “Digital-to-Analog Converter (DAC)” for additional
information.
www.xilinx.com Spartan-3A/3AN FPGA Starter Kit Board User Guide
UG334 (v1.1) June 19, 2008
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