Hardware Documentation and Howto's

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pRU

pRU Registers and Bus System

Top level firmware.pngBus tree.png

The pRU bus system is connecting the various modules on the FPGA to a common master, the Microblaze Subsystem. Each of the modules is associated with a given BASE-ADDRESS specified in the pRU Control Interface Document. Note that several instances do exist for certain modules. E.g. there are one alpide_data instance for each ALPIDE chip connected to the pRU. To communicate with a specific instance one needs to add an offset of 0x1000 times the instance number to the module base address.

E.g. if you want to communicate with the

  • 1st instance: <ALPIDE_DATA_BASEADDR>
  • 2nd instance: <ALPIDE_DATA_BASEADDR> + (0x1000 * (2-1))
  • 16th instance: <ALPIDE_DATA_BASEADDR> + (0x1000 * (16-1))
Module Registers

PTB-specific Module Registers

Transition Card (TC)

ALPIDE Chip

ALPIDE Bonding and Mounting

Chip Cable

9 Chip String

  • 2019 November 5
  • Some of the aluminium traces on the flex cable broke by the tail of the cable (near the ZIF stiffener). [[:Media:Tail_modifications.png

| Current design and possible modifications]] shows the current design and two possible modifications. It has been decided that new designs will use the design 1 modification and longer ZIF-stiffener (30 mm long).

Production Test Box (PTB)

FPGA Mezzanine Card (FMC)

mTower

Cooling Laboratory Setup

LAUDA Ultracool UC 4 is used for water cooling in the laboratory now (data sheet and manual).