RockyLogic Ant8¶


Status	planned
Channels	8
Samplerate	500MHz
Samplerate (state)	?
Triggers	?
Min/max voltage	?
Memory	?
Compression	?
Website	rockylogic.com

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 On Hc00a Pgzi

Rockylogic Ant8 Idt Ics501m

Diy Rockylogic Ant8 Cable Solder Jumper Wires

Diy Rockylogic Ant8 Cable Ribbon Cable

Rockylogic Ant8 Pcb Front

Rockylogic Ant8

Rockylogic Ant8 Xilinx Spartan Xc2s30 Fpga

Rockylogic Ant8 Device

Diy Rockylogic Ant8 Cable Prepare Heatshrink Tubing

Rockylogic Ant8 Atmel 93c66 Eeprom

Rockylogic Ant8 Xilinx Xc9572xl Cpld

Diy Rockylogic Ant8 Cable Connector

Rockylogic Ant8 Pcb Back

Diy Rockylogic Ant8 Cable Heat Shrink Tubing

Rockylogic Ant8 Ftdi Ft245bm

Rockylogic Ant8 Device With Probes

Diy Rockylogic Ant8 Cable Heated Up

Rockylogic Ant8 National Lp2989 Im2 5

Diy Rockylogic Ant8 Cable Cable Connected

Diy Rockylogic Ant8 Cable Jumper Wires Cut

Diy Rockylogic Ant8 Cable Finished With Ezhooks

Diy Rockylogic Ant8 Cable Jumper Wires

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:

    - 
        [](./img/Diy_rockylogic_ant8_cable_connector.jpg)

Sub-D connector

    - 
        [](./img/Diy_rockylogic_ant8_cable_ribbon_cable.jpg)

Ribbon cable (black lead removed)

    - 
        [](./img/Diy_rockylogic_ant8_cable_cable_connected.jpg)

Connected cable

    - 
        [](./img/Diy_rockylogic_ant8_cable_jumper_wires.jpg)

Jumper wires

    - 
        [](./img/Diy_rockylogic_ant8_cable_jumper_wires_cut.jpg)

Cut jumper wires

    - 
        [](./img/Diy_rockylogic_ant8_cable_heat_shrink_tubing.jpg)

Heat-shrink tubing

    - 
        [](./img/Diy_rockylogic_ant8_cable_prepare_heatshrink_tubing.jpg)

Prepared heat-shrink tubing

    - 
        [](./img/Diy_rockylogic_ant8_cable_solder_jumper_wires.jpg)

Soldered jumper-wires

    - 
        [](./img/Diy_rockylogic_ant8_cable_heated_up.jpg)

Heated up

    - 
        [](./img/Diy_rockylogic_ant8_cable_finished_with_ezhooks.jpg)

Finished cable with E-Z Hooks

See also this flickr set for more photos.

Resources¶

TODO.