HARDWARE REFERENCE A
3-2
Table 3-1. External Connectors and LEDs
Function Ref. Description
Power +5 VDC
(Cyclone EP only)
J7 A one-pin connector that interfaces to the primary power supply and cable
(supplied). Provides +5 VDC and ground connections.
(On the PCI-SDK Platform, power is supplied through the edge connector.)
Power +5 VDC, +12 VDC
(Cyclone EP only)
J6 A four-pin connector that interfaces to a secondary power supply and cable (not
supplied). Three of the connector pins connect to +5 VDC, +12 VDC and ground.
(On the PCI-SDK Platform, power is supplied through the edge connector.)
LED (GREEN) CR1
CR2
CR3
CR4
CR5
Lit when +5V is in tolerance
Lit when +12V is in tolerance
Lit when -12V is in tolerance
Lit when +3.3V and +5V is in tolerance
Lit when processor is performing bus cycles.
LED (RED) CR6 Lit if processor fails self test or CPU module is not installed.
User LEDs (RED) CR9 Four user-programmable LEDs; programmed via CIO Port C.
Serial Port (RS-232) J5 An RJ-11 (“phone plug”) connector for serial communication and download.
Parallel Port
(Centronics-compatible)
J1 A DB-25 connector for parallel download.
Squall II Interface J2 Allows Squall II Module expansion. I/O devices are given direct access to the
memory system.
i960 Processor Module
(CPU Module)
J3, J4 Modules which allow all current and future i960 processors to be used on the
Cyclone EP and PCI-SDK Platform.
Four-position DIP Switch S1 S1.1 Enables VPP to Cyclone EP base board Flash ROMs
S1.2 Enables UART Interrupt Request to the NMI
S1.3 ROMSWAP - causes the addresses of the CPU Module ROM and the base
board ROMs to be exchanged. If switch is OFF the processor boots from the CPU
Module ROM. If switch is ON the processor boots from base board ROMs.
Reset pushbutton S2 Used to manually reset the Cyclone EP.
DRAM SIMM Sockets U19-U20 Supports up to 32 Mbytes of standard 72-pin SIMMs.