Changes

The Xilinx Spartan-3A FPGA we will be using on the SiPM control board can be programmed using any of several modes. This table, adapted from the [http://www.xilinx.com/support/documentation/user_guides/ug332.pdf User Guide], Table 2-1, shows the available programming modes and how to select them by setting the M[2:0] pins on the FPGA.

The Xilinx Spartan-3A FPGA we will be using on the SiPM control board can be programmed using any of several modes. This table, adapted from the [http://www.xilinx.com/support/documentation/user_guides/ug332.pdf User Guide], Table 2-1, shows the available programming modes and how to select them by setting the M[2:0] pins on the FPGA.

For information about the other pins used in the programming process, see [[SiPM digital control board netlist]].

We will be using the [[#Master serial (platform flash) mode | master serial]] programming mode, since it is simplest to set up, requires fewer pins, and we don't need the higher speed of the a parallel programming mode.

{| cellspacing=3 border=1 |

{| cellspacing=3 border=1 |

|'''M[2:0]'''

|'''M[2:0]'''

|'''Programming Mode'''

|'''Programming Mode'''

|----

| bgcolor="#33ff33"----

|<0:0:0>

|<0:0:0>

|Master serial (platform flash) mode

|Master serial (platform flash) mode

|}

|}

When programmed in SPI mode, the variant select pin

=== Master serial (platform flash) mode ===