Altera Stratix IV GX FPGA Development Board - Manual (Page 27)

Chapter 2: Board Components 2–19
Configuration, Status, and Setup Elements
August 2012 Altera Corporation Stratix IV GX FPGA Development Board
Reference Manual
JTAG Control DIP Switch
The JTAG control DIP switch can either remove or include devices in the active JTAG
chain. However, the Stratix IV GX FPGA device is always in the JTAG chain.
Table 2–13 lists the switch controls and its descriptions.
Table 2–14 lists the JTAG control DIP switch component references and
manufacturing information.
PCI Express Control DIP Switch
The PCI Express control DIP switch can enable or disable the different configurations.
Table 2–15 lists the switch controls and descriptions.
Table 2–13. JTAG Control DIP Switch Controls
Switch Schematic Signal Name Description Default
1 EPM2210_JTAG_EN
ON : Bypass Max II CPLD EPM2210 System Controller
OFF : Max II CPLD EPM2210 System Controller in-chain
ON
2 HSMA_JTAG_EN
ON : Bypass HSMA
OFF : HSMA in-chain
ON
3 HSMB_JTAG_EN
ON : Bypass HSMB
OFF : HSMB in-chain
ON
4 PCIE_JTAG_EN
ON : Bypass PCI Express
OFF : Reserved (disables JTAG chain, do not use)
ON
Table 2–14. JTAG Control DIP Switch Component Reference and Manufacturing Information
Board Reference
Device
Description
Manufacturer
Manufacturer
Part Number
Manufacturer Website
SW6
Four-position slide
DIP switch
C & K Components TDA04H0SB1 www.ck-components.com
Table 2–15. PCI Express Control DIP Switch Controls
Switch Schematic Signal Name Description Default
1 PCIE_PRSNT2n_x1
ON : Enable x1 presence detect
OFF : Disable x1 presence detect
ON
2 PCIE_PRSNT2n_x4
ON : Enable x4 presence detect
OFF : Disable x4 presence detect
ON
3 PCIE_PRSNT2n_x8
ON : Enable x8 presence detect
OFF : Disable x8 presence detect
ON
4 MAX_EN Reserved OFF