1. E. Hazen - CMS Electronics Week
HCAL DTC (aka CMS-MCH)
What should it do (for HCAL)?
Distribute TTC and receive TTS from AMC modules
Receive DAQ data from AMC modules
Optionally, receive and process SR information
It could to these things for other subsystems...
Implementation (rev 1, at least)
Lives in MCH slot for connectivity
Based on NAT-MCH base board (provides I2C, SPI, GbE)
Stack of 2 custom mezzanines plus a connector board for T4
20 Jan 2010
E. Hazen - CMS Electronics Week

2. E. Hazen - CMS Electronics Week
NAT-MCH v3 Base Board
20 Jan 2010
E. Hazen - CMS Electronics Week

3. E. Hazen - CMS Electronics Week
HCAL DTC (aka CMS-MCH)
Built on NAT-MCH base board initially
T2 gets power, GbE, SPI, I2C from NAT-MCH. 3.3V Regulators Clock fanout
T3 logic board V6 FPGA 2x SFP+ optics TTC fiber Rx Fabric I/O to T3, T4
Single-width MCH module
Provides controls, clock distribution (TTC initially)
Provides DAQ interface via fat pipes (external SLink/TTS adapter)
Font panel I/O:
2x SFP+ optical transceiver DAQ + Spare
TTCrx fiber receiver T4 T3 T2 T1
NAT-MCH base board
Standard MCH functions GbE to mezzanines
SPI for flash programming
I2C bus
20 Jan 2010
E. Hazen - CMS Electronics Week

4. E. Hazen - CMS Electronics Week
Front Panel Sketch
Provided by
NAT-MCH
Provided by DTC
mezzanines
Ext clock
input
2 x SFP(+)
100BaseT
Management
Ethernet
TTC
Fiber rx
or another SFP... discuss!
GbE to switch
20 Jan 2010
E. Hazen - CMS Electronics Week

5. Management / Clock Fanout Board (T2)
From
MCH
Base
Board
20 Jan 2010
E. Hazen - CMS Electronics Week

6. E. Hazen - CMS Electronics Week
Logic Board (T3)
DAQ fiber
FPGA
XCE6VLX130T or
XCE6VLX240T
MCH
Connector
3+4
SFP+
SFP+
Fat Pipes
to AMC
1-12
DAQ
~ 6Gb
Spare fiber
SFP+
SFP+
TTC fiber
Clock/
Data
Recovery IC
MCH
Connector
3+4
Fat Pipes
to AMC
1-12
Controls
~ 400Mb
TTC Clock
to T3 board
Conf
GbE to
NAT-MCH
20 Jan 2010
E. Hazen - CMS Electronics Week

7. E. Hazen - CMS Electronics Week
Control of DTC
Option 1 – SPI via NAT-MCH
NAT-MCH provides SPI (and I2C) to mezz boards
We will use SPI for flash programming and register access to FPGA
Option 2 – GbE via NAT-MCH switch
Plan to implement simple GbE endpoint in V6
Details TBD but could be used for local DAQ
20 Jan 2010
E. Hazen - CMS Electronics Week

8. E. Hazen - CMS Electronics Week
Plans...
Obtain NAT-MCH base board (received)
Test board layout – T2 PCB only to test
NAT-MCH integration
TTCrx receiver
Should fabricate starting next week
Finish electrical design; layout two PCBs and fabricate
Initial test/commissioning with loop-back on DTC
Integrate with MiniCTR2 (clock / controls paths)
Commission DAQ path from MiniCTR2
Commission GbE endpoint on DTC
....
20 Jan 2010
E. Hazen - CMS Electronics Week

9. E. Hazen - CMS Electronics Week
For Discussion
How to implement GbE endpoint
DAQ output protocol
Migrate to stand-alone “AMC13” in MCH-2 slot
Other...
20 Jan 2010
E. Hazen - CMS Electronics Week