CMS HCAL TIMING

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RS Communication Path to CCM
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Custom Serial 19 HUB
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(No Transcript)
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RS/RS Hub Communication

• The Master PC sends commands to a particular
  Commercial Hub which directs the command to a
  particular RS/RS Hub.
• The RS/RS Hub will either respond to the command
  or pass it on to a selected CCM.
• The command XXYYYYYY contains the command code
  itself(XX) and the operand(YYYYYY).
• XX 00 is used only by the RS/RS HUB. The
  RS/RS Hub only responds to this command and will
  ignore all other commands. The 00 command is a
  two byte write command. The Hub will only respond
  to the command if the operand is 111111. The
  command 00111111 followed by a second byte
  which selects a Hub port(CCM) and also has the
  option of sending a reset to that selected CCM.
  The four LSB of the second byte in hex format
  select the CCM(1-9), bit 5 if 1 sends a reset
  to that port.
• ! RS/RS hub responds with Node number and Status
  register.
• XX 01 reads out the content of the channel
  selection register of the CCM address specified
  by the operand(YYYYYY).
• ! CCM responds with Node number and Status
  register, selected channel content.
• XX 10 writes single byte of information to
  the CCM address specified by the operand(YYYYYY).
  A second byte follows with data to be written to
  the address specified.
• ! CCM responds with Node number and Status
  register.
• XX 11 write an array of data to the CCM at
  address specified by the operand(YYYYYY). The
  second byte contains the size of the array and
  the following bytes contain the data to be
  written to the address specified.
• ! CCM responds with the Node number and Status
  register.

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Custom HUB STATUS

• 30 PCBs are ordered and should be delivered this
  week.
• Will assemble and test 1st PCB and then have
  remaining assembled at FNAL.
• Need to fabricate mechanical box.