RockyLogic Ant8

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The RockyLogic Ant8 is a USB-based, 8-channel logic analyzer with up to 500MHz sampling rate.

See RockyLogic_Ant8/Info for more details (such as lsusb -v output) about the device.

Hardware

  • Xilinx Spartan-II XC2S30 VQ100AMS0341 (FPGA; 13,824 total distributed RAM bits, 24K total block RAM)
  • Xilinx XC9572XL VQ44BMN0345 10C (CPLD; 10ns pin-to-pin logic delays)
  • FTDI FT245BM (USB FIFO device)
  • IDT ICS501M (clock multiplier)
  • Atmel AT93C66 (4kB, three-wire serial EEPROM)
  • ON Semiconductor (On) HC00A PGZI (quad 2-input NAND gate)
  • National/TI LP2989 (marking: 33AB 2989 IM-2.5) (micropower/low-noise, 500mA ultra low-dropout regulator)
  • 20MHz crystal (for the FPGA)

Photos

RockyLogic Ant8

Device with probes

PCB, front

PCB, back

FTDI FT245BM

Atmel 93C66 EEPROM

Xilinx XC2S30

Xilinx XC9572XL

IDT ICS501M

National LP2989

ON HC00A

See also this flickr set for more PCB photos of the device.

Protocol

See the Ant18e wiki page for a description of the Ant8/Ant16/Ant18e protocol.

DIY Ant8 probe cable

The Ant8 cable shipped with the device doesn't have the best quality probes/hooks, but you can easily make your own cable where you can attach the better-quality E-Z Hooks.

Requirements:

  • 10-pin colored ribbon cable, such as this one . -- The colors match the one shipped with the Ant8 (white, gray, purple, blue, green, yellow, orange, red, brown) if you remove the 10th (black) lead. The brown lead is GND.
  • A "SUB-D" connector where you can attach the ribbon cable, such as this one .
  • 5 female-female jumper wires, such as these ones , which we'll cut into two halves to get 10 female connectors (only 9 needed).
  • 9 short pieces of heat-shrink tubing.
  • 9 E-Z Hook grippers/hooks to attach to the cable.

Photos:

Sub-D connector

Ribbon cable (black lead removed)

Connected cable

Jumper wires

Cut jumper wires

Heat-shrink tubing

Prepared heat-shrink tubing

Soldered jumper-wires

Heated up

Finished cable with E-Z Hooks

See also this flickr set for more photos.

Resources

TODO.