参数资料
型号: HW-SPAR3A-SK-UNI-G
厂商: Xilinx Inc
文件页数: 32/143页
文件大小: 0K
描述: KIT STARTER W/SPARTAN-3A
产品培训模块: FPGAs Spartan3
产品变化通告: Adapter Replacement 23/May/2008
标准包装: 1
系列: Spartan®-3A
类型: FPGA
适用于相关产品: Spartan?3A FPGA,XC3S700A-FG484
所含物品: 板,线缆,文档,电源
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其它名称: 122-1514
Chapter 2: Switches, Buttons, and Rotary Knob
FPGA PROG_B Pin
(Press to reset/reprogram FPGA)
R
FPGA_INIT_B
(W21)
RED
FPGA_AWAKE
(AB15)
YELLOW
FPGA DONE Pin
(Lit when FPGA is configured)
GREEN
UG330_c2_06_032107
Figure 2-14:
AWAKE and INIT_B LEDs
AWAKE LED
The yellow-colored AWAKE LED connects to the FPGA’s AWAKE pin and is used if the
Spartan-3A Suspend mode is enabled in the bitstream. If the Suspend mode is not used,
then the FPGA’s AWAKE pin is available as a full user-I/O pin.
If the FPGA is not yet configured, the FPGA’s AWAKE pin is dimly lit because pull-up
resistors are enabled during configuration. The FPGA’s PUDC_B pin is connected to GND
on the board.
To light the AWAKE LED in an application, drive the AWAKE pin High.
INIT_B LED
The red-colored INIT_B LED serves multiple purposes:
?
?
?
?
At power-up or when the PROG_B button is pressed, the LED flashes momentarily
while the FPGA clears its configuration memory.
If configuration fails for any reason, then the FPGA’s DONE LED will be unlit and the
INIT_B LED will light. This indicates that the FPGA could not successfully configure.
After the FPGA successfully completes, the INIT_B pin is available as a general-
purpose user-I/O pin. If no signal drives INIT_B, then it is defined as an input pin
with a pull-down resistor. It might appear that the LED dimly glows. Drive the
INIT_B pin High to turn off the LED or Low to light the LED.
If using the Readback CRC feature, the INIT_B pin is reserved and signals a CRC error
after configuration. If such an error occurs, the FPGA drives INIT_B Low, lighting the
LED.
If using the INIT_B pin as a user-I/O pin after configuration, drive the pin Low to light the
LED and High to shut it off. Jumper J46, shown in Table 4-2, page 42 , must be in either the
“Disabled” or “Enabled during Configuration” setting.
32
Spartan-3A FPGA Starter Kit Board User Guide
UG330 (v1.3) June 21, 2007
相关PDF资料
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HW-SPAR3AN-SK-UNI-G KIT STARTER SPARTAN-3 AN
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