Xilinx manual Configuration Options, 30SP605 Fpga Configuration Modes M10 Bus Width

Configuration Options

Configuration Options

The FPGA on the SP605 Evaluation Board can be configured by the following methods:

•“3. SPI x4 Flash,” page 16

•“4. Linear BPI Flash,” page 18

•“5. System ACE CF and CompactFlash Connector,” page 20

•“6. USB JTAG,” page 22

For more information, refer to the Spartan-6 FPGA Configuration User Guide. [Ref 2]

Table 1-30:SP605 FPGA Configuration Modes

Configuration	M[1:0]	Bus Width	CCLK	Configuration Solution	User Guide Section
Mode			Direction
Master Serial/SPI	01	1, 2, 4(1)	Output	SPI X4 Memory U32 (J46 on), or	3. SPI x4 Flash
				External SPI Header J17 (J46 off)
Master	00	8, 16	Output	Linear Flash Memory U25 (BPI)	4. Linear BPI Flash
SelectMAP/BPI(2)
JTAG(3)	xx	1	Input	Xilinx Platform Cable USB	6. USB JTAG
			(TCK)	plugged into J4
Slave SelectMAP(2)	10	8, 16	Input	System ACE CF Controller and	5. System ACE CF and
				CompactFlash Card	CompactFlash Connector
Slave Serial(4)	11	1	Input	Not Supported	–

Notes:

1.Utilizing dual and quad SPI modes.

2.Parallel configuration mode bus is auto-detected by the configuration logic.

3.Spartan-6 devices also have a dedicated four-wire JTAG (IEEE Std 1149.1) port that is always available to the FPGA regardless of the mode pin settings.

4.Default setting due to internal pull-up termination on Mode pins.

With the mode switch SW1 set to 01, the SP605 will attempt to boot or load a bitstream from either the SPI X4 Flash device U32 or a user supplied SPI Flash memory mezzanine card installed on the SPI programming header J17, depending on the SPI select jumper J46 configuration, as shown in Table 1-30. With the mode set to 00, the SP605 will attempt to boot or load a bitstream from Linear Flash device U25 (BPI).

With the mode switch SW1 set to 10, if a CompactFlash (CF) card is installed in the CF socket U37, System ACE CF will attempt to load a bitstream from the CF card image address pointed to by the image select switch S1. With no CF card present, the SP605 can be configured via the onboard JTAG controller and USB download cable as described in “6. USB JTAG,” page 22.

SP605 Hardware User Guide www.xilinx.com 55

UG526 (v1.1.1) February 1, 2010