1. MicroTCA Common Platform For CMS Working Group
E. Hazen - Boston University
for the CMS Collaboration
E. Hazen -- Upgrade Week

2. uTCA Common Platform WG
Included in scope of this WG
Backplane connectivity (port connections)
Protocols on common ports (TTC / TTS / DAQ)
Crate and MCH specification
Guidelines for AMC designers
Not in scope (but negotiable)
Implementation of MMC, GbE on AMCs and MCH
Power supplies
E. Hazen -- Upgrade Week

3. One proposal Most of the remainder of my talk
represents a “gentlemen's agreement”
on a possible configuration
E. Hazen -- Upgrade Week

4. uTCA Ports Use for CMS
E. Hazen -- Upgrade Week

5. Fabrics A, B Use Port 0 is GbE sourced from commercial MCH1
Port 1 – Compatible with Xilinx GTP (<= Gb/s)
DAQ data from AMC to MCH2
May be used also for fixed-latency controls (TTC)
May be used also for buffer status (TTS)
May be used also for auxiliary data (selective readout)
Port 3 – “Low speed” serial LVDS ( Mb/s)
Fixed-latency controls (TTC)
Buffer status (TTS)
Auxiliary data (selective readout)
E. Hazen -- Upgrade Week

6. Fabrics D and up Use not mandated by this WG Mainly for trigger users
Two options for interconnection
Star connection to tongue 3, 4 of MCH slots
Interconnect passively or with crosspoint switch at MCH
Fixed connections on backplane
Or, a combination:
Ports 4-7 interconnected on backplane
Ports 8-12 routed to crosspoint switch on MCH2
E. Hazen -- Upgrade Week

7. CMS Readout Crate (i.e. HCAL)
E. Hazen -- Upgrade Week

8. TCA Dual-Star Backplane
Bi-directional serial (up to 10Gb/sec)
point-to-point links from each AMC to MCH
(redundant links to each MCH)
Note: Interconnections can be customized
by the backplane manufacturer inexpensively.
Fabric A (1 link)
Gigabit Ethernet
Fabric B (1 link)
LVDS private protocol
Fabric D-G (4 links)
CLK1/2 (1 link)
Dedicated MLVDS clock
MCH 1
Commercial /Std
MCH 2 aka “AMC13”, “CMS-MCH”, “DTC”
Custom design for CMS
E. Hazen -- Upgrade Week

9. MCH Construction Four stacked PCBs, 8mm board-to-board spacing!
Mechanically a real challenge. T1 T2 T3 T4
T1 board – Management functions; Fabric A (Ethernet) port
T2 board – Clocks and Fabric B port
T3 and T4 – Fabric D-G ports
E. Hazen -- Upgrade Week

10. CMS-MCH Preliminary Thoughts
Base configuration has only tongues 1, 2
Base board - “AMC13” with optics and HS links
Clocks board - distributes LHC clock and controls
Mezzanine connector for T3 with IPMI
New custom T1 base board MMC functions (as AMC-13)
TTC optical rx
2x SFP (or QSFP)
Cross-over GbE from MCH1 for controls and local DAQ
Optional T3 board Optional (not in std CMS-MCH)
Crosspoint switch for trigger applications
Clocks board Clock / controls fanout T4 T3 T2 T1
E. Hazen -- Upgrade Week

11. MicroTCA Crate Layout Option 1 (preferred) Option 2
12 full-height AMCs
non-redundant power
single-width MCH
i.e. Vadatech VT892
Option 2
12 mid-height AMCs
redundant power
double-width MCH
Rear transition modules
evolving xTCA
“physics profile”
E. Hazen -- Upgrade Week

12. Vadatech 891 available now 892 is a modified version
Typical MicroTCA Crate with 12 AMC slots
Vadatech VT891
MCH 2
Vadatech 891 available now
892 is a modified version
with vertical cooling and a few other optons
MCH 1
Power
Modules
AMC slots
Schroff xTCA
physics profile
E. Hazen -- Upgrade Week

13. Crate Layout Why we prefer option 1 above
Full-height modules improve cooling
Mid-height may be acceptable, but we will be using large FPGAs with lots of synchronous logic -> HEAT!
Other crate issues
Need JTAG interface on front/rear for flash programming
Need vertical cooling rather than telecoms std front-to- back
E. Hazen -- Upgrade Week

14. Status and Plans Draft document on the items discussed
To be circulated this week for editing
Public draft ~ next week
Make a list of work to be done, seek volunteers
Work!
E. Hazen -- Upgrade Week

15. Reserve Slides
E. Hazen -- Upgrade Week

16. HCAL DTC (CMS-MCH Pre-prototype)
Built on NAT-MCH base board
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
T2 gets power, GbE, SPI, I2C from NAT-MCH. 3.3V Regulators Clock fanout
Spartan-3A FPGA
T3 logic board V6 FPGA Fabric I/O to T3, T4
Connector board TTC optical rx, CDS SFP+ T4 T3 T2 T1
NAT-MCH base board
Standard MCH functions GbE to mezzanines
SPI for flash programming
I2C bus
E. Hazen -- Upgrade Week

17. Prototype DTC (CMS-MCH)
SFP/TTC board
T2 (clocks) board
T3 (fabric) board
SFP+ (2)
TTC Fiber
GbE (2)
Prototype DTC (CMS-MCH)
E. Hazen -- Upgrade Week

18. Legacy DAQ Adapter
One i.e. 9U VME module handles two uTCA crates, each with 400MBytes/sec out
Crate 1:
SLink (2)
TTS
Carrier PCB (i.e. 9U VME!)
SLink64
SLink64
Power (only)
from VME
Dual RJ-45
Virtex
5/6
FPGA
Fiber I/O
from 2 uTCA
crates
SFP+
SFP+
SLink64
Crate 2:
TTS
SLink (2)
SLink64
E. Hazen -- Upgrade Week