USER GUIDE AND SPECIFICATIONS

ASICMiner Prisma ASICMiner Prisma is based on a proprietary X48 design for BE200. It greatly reduces power consumption of the device per GH/s compare to the X24 design.

It takes the same cooling structure and similar form factor as the ASICMiner Tube, while being even more efficient and compact. Also, we added cgminer support on Raspberry PI.

Figure 1. ASICMiner Prisma

1 PCI-E Plug Connector 2 3 Pin Connector for the Fan/BE controller power supply 3 3 Pin UART Connector 4 DIP Switch

Safety Information

⚠ Caution Do not operate the hardware in a manner not specified in this document and in the user documentation. Misuse of the hardware can result in a hazard. You can compromise the safety protection if the hardware is damaged in any way. If the hardware is damaged, return it to ASICMiner for repair.

Clean the hardware with a soft, nonmetallic brush. Make sure that the hard ware is completely dry and free from contaminants before returning it to service.

Hardware Overview ASICMiner Prisma is an updated and expanded replacement to the well-received Tube. Each hashing board has been expanded to house 48 BE200 chips, powered using a string layout. Lightweight stands at each end allow the units to be stacked and 24 miners can be daisy chained to BE controller, Windows PC or Raspberry Pi. A USB adapter or BE controller is included in the package.

Connector Pinouts ASICMiner Prisma is powered from two 6 pin PCI-E connectors per hashing board. The following figure and table show the signals on the 6 pin PCI-E connector. Note that two of the PCI-E connectors should be connected while powering on.

Figure 2. PCI-E Connector

GN

D

GND

GND

GND

GND

GND

1 2 3 1 2 3

4 5 6 4 5 6

12 V

DC

12 V

DC

12 V

DC

12 V

DC

12 V

DC

12 V

DC

The following figure and table show the signals on the 3 pin connector that is used for powering the fan and BE controller.

Figure 3. 3 Pin Connector

1 2 3

GND

12 V

DC

Sign

al

Each hashing board has two 3 pin UART connect, so that they could be daisy chained to the BE controller. The following figure and table show the signals on the 3 pin UART connector.

Figure 4. 3 Pin UART Connector

1 2 3 1 2 3

Rx

Tx

GND

Rx

Tx

GND

DIP Switch Each hashing board has a DIP switch that is used for the BE controller addressing. All of the hashing boards should have a unique board ID if they are daisy chained to the same BE controller. Otherwise the BE controller will not recognize the hashing board, and result in the whole group will not work correctly. The following figure and table show how to set the DIP switch for different board ID.

Figure 5. DIP Switch

Figure 6. DIP Switch Settings for Each Board ID

1 2 3 4 5

Board 01

1 2 3 4 5

Board 02

1 2 3 4 5

Board 03

1 2 3 4 5

Board 04

1 2 3 4 5

Board 05

1 2 3 4 5

Board 06

1 2 3 4 5

Board 07

1 2 3 4 5

Board 08

1 2 3 4 5

Board 09

1 2 3 4 5

Board 10

1 2 3 4 5

Board 11

1 2 3 4 5

Board 12

1 2 3 4 5

Board 13

1 2 3 4 5

Board 14

1 2 3 4 5

Board 15

1 2 3 4 5

Board 16

1 2 3 4 5

Board 17

1 2 3 4 5

Board 18

1 2 3 4 5

Board 19

1 2 3 4 5

Board 20

1 2 3 4 5

Board 21

1 2 3 4 5

Board 22

1 2 3 4 5

Board 23

1 2 3 4 5

Board 24

1 2 3 4 5

Board 25

1 2 3 4 5

Board 26

1 2 3 4 5

Board 27

1 2 3 4 5

Board 28

1 2 3 4 5

Board 29

1 2 3 4 5

Board 30

1 2 3 4 5

Board 31

1 2 3 4 5

Board 32

ASICMiner Prisma Physical Dimensions

Figure 7. ASICMiner Prisma Dimensions, Front

Figure 8. ASICMiner Prisma Dimensions, Side

Cables and Accessories Table 1. Accessories Available from ASICMiner

Accessory Description BE Controller An external 32bit PIC board is used as the controller, and

can handle 24 daisy chained Prismas. BE Controller Power Cable Power cable of the BE controller, that could get power

from the hashing board. USB Adapter An adapter can be used to connect to any cgminer based

device. One to One Cable (Short) Short communication cable of the hashing board, which

could daisy chain the hashing boards. One to One Cable (Long) Long communication cable of the hashing board, which

could daisy chain the hashing boards. Fan A single, high static pressure 120 mm fan.

BE Controller An external 32bit PIC board is used as the controller, and can handle 24 daisy chained Prismas.

Figure 9. BE Controller

1 Ethernet Port 2 Status LEDs 3 Reset Button

4 UART Port 5 ISP Port 6 5 VDC Port 7 Rack Mount Slot

Powering ASICMiner Prisma The Prisma does not come with a power supply, and you will need a typical computer PSU with 8 PCI-E 6 Pin power connectors. In most cases, we plug 4 one to two power cables from the power supply that has 4 output terminals to the Prisma.

📝 Note that two of the PCI-E connectors should be connected while powering on.

Figure 10. PCI-E Connectors

Powering the Fan You could power on the fan by connecting the fan’s cable to the 3 Pin connector on the hashing board.

Figure 11. 3 Pin Connector

Powering the BE Controller There is a BE controller power cable shipped with the BE controller. You could power on the BE controller by connecting the BE controller’s 5 VDC port and the 3 Pin connector on the hashing board with the power cable.

Figure 12. BE Controller’s 5 VDC and 3 Pin Connector

Wiring Daisy Chained ASICMiner Prismas For one Prisma, separate three of the short one to one cables. Starting on any of the four hashing boards (Board A), plug one end of the cable into the

3 Pin UART connector near the fan end of Board A and the other into Board B. Repeat with Board B to C and C to D. After prepared several Prismas, plug in a long one to one cable from one Prisma’s Board

D or A to another Prisma’s Board D or A. Repeat with every Prismas.

Figure 13. UART Connector

Wiring the BE Controller Plug in a long one to one cable from one end Prisma’s Board D or A to one of the UART

port on the BE controller. Plug in an Ethernet cable from Ethernet port on the BE controller to your router. Make sure each mining board sharing a BE controller has a unique 5 bit switch code. See

the DIP Switch for all the codes.

Figure 14. 3 Pin UART Connector

Configuring the BE Controller Power on the BE controller. Make sure your router’s subnet is 0, i.e. 192.168.0.x. If not then change it to 0, this is

just temporary. Using a browser, navigate to http://192.168.0.254:8000, this will go to the Prisma’s

configuration page. Navigate to the Settings.

Change the IP to something memorable, and on your preferred subnet. Change the gateway to the IP of you router. Change the secondary DNS to “8.8.8.8”. Enter the pool URL in the format as shown in table 2. Enter the port of your pool. Enter your miner username and password. Set the ASIC clock at 240 MHz for stock speeds. Click the update and restart button.

Navigate back the IP of the miner you set to check mining started. You can then change your router subnet back whatever you are used to using.

Table 2. Pool URL Format

Pool Servers Port User Password GHash IO us1.ghash.io 3333 username.worker any password BTCGuild stratum-lb-usa48.btcguild.com 3333 username_worker any password F2Pool stratum.f2pool.com 3333 username.worker any password BTCChina stratum.btcchina.com 3333 username.worker any password

📝 Note With latest firmware, we support to set two pools. If you only have one pool to be set, you need to type the pool information twice with comma separated. i.e. “Pool URL,Pool URL”.

Figure 15. Settings Example

FAQ How do I reset the settings to default? Hold and press the reset button on the BE controller.

How do I set up more than one Prisma on one BE controller? First, you need to daisy chain the Prismas. Then there is a DIP switch on each hashing board which must be configured to be unique in order for the BE controller to detect it.

Why there is no hash rate after I powered on? You have to check the following list:

The DIP switch code of each hashing board should be unique.

The settings of the controller should be correct, especially the format of the pool settings.

The worker should be created if the pool does not create the worker automatically.

Why there are some hashing boards missed? You have to check if the DIP switch code of each hashing board is unique and the one to one cables are connected correctly.

On the configuration page, what does the UARTBUS: X mean? The UARTBUS: X is the UART 3 port on the BE controller, the UARTBUS: Y is the UART 2 port, and The UARTBUS: Z is the UART 1 port.