Acromag IP-EP201 JTAG-Reconfigurable Cyclone II FPGA Digital I/O Module

The Acromag IP-EP201 is an Industry Pack (IP) module that delivers 48 TTL bidirectional digital I/O lines through a JTAG-reconfigurable Altera Cyclone II FPGA. Designed for industrial digital interfacing, this module combines user-programmable logic with direct FPGA control and flexible clocking, enabling custom I/O solutions without external interface logic.

Technical Specifications

FPGA Core

• Altera Cyclone II EP2C20


• JTAG or IP bus configuration download Digital I/O


• 48 TTL bidirectional I/O lines, 5V tolerant


• LVTTL external clock input connected directly to FPGA global clock pin


• Direction control in 8-channel groups Clocking


• On-board Cypress CY22150 clock synthesizer (or equivalent)


• Frequency range: 250 kHz to 100 MHz


• IP bus clock support: 8 MHz and 32 MHz IP Bus Interface


• ANSI/VITA 4-1995 compliant


• 8 or 16-bit I/O space data width


• 8-bit ID space


• Access time (8 MHz): 1 wait state, 375 nS cycle


• Two interrupt request levels


• Wired DMA support (not enabled in example firmware) Power-Up & Configuration


• On-board CPLD manages boot and FPGA download


• FPGA assumes full IP bus control post-configuration Environmental


• Operating temperature: 0 to 70°C (standard); -40 to 85°C (IP-EP201E extended range)


• Storage temperature: -55 to 125°C


• Humidity: 5 to 95% non-condensing

Key Features

• User-programmable logic via Altera Quartus II tools and VHDL


• Rapid I/O reconfiguration without hardware redesign


• Global clock distribution for timing-critical applications


• Independent channel direction control enables mixed input/output configurations

Typical Applications Digital signal acquisition, real-time control interfaces, test automation, industrial protocol bridging, and custom instrumentation requiring flexible I/O expansion.

Compatibility & Integration Engineering Design Kit includes schematics, parts list, and example VHDL code. Requires VHDL expertise and Altera Quartus II development environment.