TOWER SYSTEM
Jumper
Option
Setting
Description
J1
CPLD GCLK3 Selection
*1-2*
Connect GCLK3 to Tower CLKOUT1 (B25)
2-3
Connect GCLK3 to Tower CLKOUT0 (A64)
J2
SD Card SPI Mode
Select Pull Option
1-2
Pull-up on SD Card DAT3/SS signal (SPI Mode Select)
2-3
Pull-down on SD Card DAT3/SS signal (SPI Mode Select)
*OFF*
No pull resistor applied
J3
SD Card SPI Mode
Chip-Select
*1-2*
Connect SD Card DAT3/SS signal to SPI1_CS0 (B9)
2-3
Connect SD Card DAT3/SS signal to SPI1_CS1 (B8)
J4
Serial Flash
Configuration Options
*1-2*
Connect Serial Flash Chip-Select to Tower SPI
Chip-Select
2-3
Enable Serial Flash Write Protect
5-6
Connect Serial Flash HOLD signal to Tower GPIO5 (B52)
J6
JTAG/GPIO Connections
1-2
Connect GPIO8 (A10) to CPLD JTAG TMS signal
3-4
Connect GPIO9 (A9) to CPLD JTAG TDO signal
5-6
Connect GPIO1 (B21) to CPLD JTAG TDI signal
7-8
Connect GPIO3 (B23) to CPLD JTAG TCK signal
J10
MRAM Chip-Select
Isolation
*ON*
Connect Flexbus CS0 to MRAM Chip-Select
OFF
Disconnect Flexbus CS0 from MRAM Chip-Select
J11
CPLD Flexbus CS0
Isolation
*ON*
Connect Flexbus CS0 to CPLD pin 48
OFF
Disconnect Flexbus CS0 from CPLD
TWR-MEM Jumper Options
The following is a list of all the jumper options. The
*default*
installed jumper settings are shown in bold
with asterisks.
