Avalon2

Avalon2 is the second machine of Avalon project. using the 55nm ASIC chips

Pictures

A3255

PCB

Single modular

Avalon2 parts

Avalon2

User manual

TP LINK WR703N

The USB on the AR9331 have bugs. if you want use serial console, please the direct serial console on 703N (the /dev/ttyATH0). it's far more stable than USB-serial convertor. you may want add a usb-hub between machine and 703n

Raspberry Pi

The 13 ports USB HUB

• The default firmware IP address is 192.168.0.100, you can access it by http://192.168.0.100
• You may need update the address/DNS to your local configuration. DO NOT FORGET your IP address.
• If Rpi can access internet the cgminer should automatic start

• 8GB Memory card: http://item.jd.com/632744.html
• Reflash: sudo dd if=openwrt-brcm2708-sdcard-vfat-ext4.img of=/dev/sdb bs=4M #/dev/sdb is your memory card
• USB Hub, UNITEK Y-2132 USB2.0 13ports
• USB WiFi, EDUP EP-N8508GS

Manual by others

• 彩云比特中文评测
• Guide - Dogie's Comprehensive Avalon Avalon2 Setup + Silencer Mod

Overclock

• Chip Freq: 1700, Voltage: 10750 --> 119GHs

Extra cooling is recommended, GJPMiningco recommend remove the slide 
panel that covers the heatsink and add some fans that blow down into
the heatsink at least 3 fans evenly spaced along the heatsink

The Avalon2

Power supply

Specification

315GH/s, 1020W@220V in normal mode. 
210GH/s, 420W@220V in ECO mode. 

Avalon2 Single Modular

Module hash speed: ~105GHS
Chip operating speed: 1.5GHS 
Chip working voltage: 1.0V 
Typical values ​​DH: ~2% 
Module Power: 24.5A@12V, 294W (excluding fan power consumption). 0.1A @ 5V, 0.5A @ 3.3V. 
Power Module conversion efficiency: >= 87% 
Design Operating temperature: 85C (chip temperature), 60C (PCB, temperature sensor measurements) 
Fan: 4PIN PWM speed control, report fan speed back.
Include: Single modular, USB Connector

LEDS

from bottom(FPGA) to top is 1 to 8 
1, 2, 3, 4, 5: Blink when found nonce
6, 7, Data transfer
8: Error or under testing

Design Files

• A3255 ASIC Datasheet: http://downloads.canaan-creative.com/hardware/A3255/datasheet/
• The Hardware design files: http://downloads.canaan-creative.com/hardware/A3255/avalon2

Source code

Debug port

• MM(Miner Manager)]
• The cgminer Avalon2 support
• OpenWrt LUCI page
• OpenWrt cgminer package, files and config
• Build script file

Firmware

20140411

• Here: http://downloads.canaan-creative.com/software/avalon2/2014-04-11
• Update OpenWrt

20140320

• Here: http://downloads.canaan-creative.com/software/avalon2/2014-03-20/
• MM(201401-1f7d08b0): read the power good single back.
  • Poweron five small module one by one. good for PSU.
• Update cgminer to 4.0.0
• Add devs information on status page.

20140123

• Here: http://downloads.canaan-creative.com/software/avalon2/2014-01-23/
• MM(201401-a3cb3950): Include the first stable version of MM firmware
• Include the RPi OpenWrt firmware
• Include the 703N OpenWrt firmware
• Support fixed fan speed, support A3255 frequency from 1G to 2G, support adjust voltage for 0.65v to 1.1v
• Display all modules status include 2 fan, 2 temperature sensors, voltage and frequency
• Voltage display as encode mode. needs to be changed to human readable
• Include an ASIC cores testing python script

NEXT

• NOTICE: Only for testing
• Update cgminer from 4.0.0 to 4.3.0
• Detect Avalon2 Power good in cgminer
• Display GHS(not MHS) on cgminer status page
• Support frequency setting for avalon2 and avalon3 chips on cgminer configuration page
• Support voltage setting for avalon2 and avalon3 chips on cgminer configuration page

Test plan

• Test 10 avalon2 single module with one host (703N or RPi)

Testing

• The Avalon2 MM firmware support testing. no needs particular firmware.
• The host test program is here: https://github.com/BitSyncom/avalon-extras/blob/master/scripts/avalon2-a3255-modular-test.py
• Run avalon2-a3255-modular-test.py for testing. you may update your serial port at -s option.

Donation

• Ngzhang0: 1kBGUHDxmSAegACRB6fcE2vrnVAfPJarW
• Con Kolivas: 15qSxP1SQcUX3o4nhkfdbgyoWEFMomJ4rZ
• Kanoi: 1KanoiBupPiZfkwqB7rfLXAzPnoTshAVmb
• Xiangfu: 19BT2rcGStUK23vwrmF6y6s3ZWpxzQQn8x

Links

• 55nm open design contest: http://avalon-asics.com/avalon-gen2-55nm-open-source-design-contest/
• Documents release by Avalon: http://downloads.canaan-creative.com/hardware/A3255/
• Avalon2 prototype by using Avalon1 hardware design