Difference between revisions of "Clock Card"
From MCEWiki
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** a pair of [[Fiber Cable |fibre optical links]] connected to a PC that controls the MCE subrack. ([http://www.cypress.com/?docID=31689 Cypress Hotlink] protocol is used.) | ** a pair of [[Fiber Cable |fibre optical links]] connected to a PC that controls the MCE subrack. ([http://www.cypress.com/?docID=31689 Cypress Hotlink] protocol is used.) | ||
** a manchester-encoded [[Fiber Cable |fibre link]] to a Sync Box. | ** a manchester-encoded [[Fiber Cable |fibre link]] to a Sync Box. | ||
| − | ** a non-manchester-encoded [[Fiber Cable |fibre link]] input (only populated prior to RevD) | + | ** a non-manchester-encoded [[Fiber Cable |fibre link]] input (U23 only populated prior to RevD) |
* packet assembly/disassembly | * packet assembly/disassembly | ||
* dispatch incoming commands to other cards in the MCE rack over the backplane | * dispatch incoming commands to other cards in the MCE rack over the backplane | ||
Revision as of 13:23, 4 August 2015
Functional Description
Each MCE is equipped with only one Clock Card. There Clock Card is responsible for the following tasks:
- communicate to the outside world:
- a pair of fibre optical links connected to a PC that controls the MCE subrack. (Cypress Hotlink protocol is used.)
- a manchester-encoded fibre link to a Sync Box.
- a non-manchester-encoded fibre link input (U23 only populated prior to RevD)
- packet assembly/disassembly
- dispatch incoming commands to other cards in the MCE rack over the backplane
- Clock generation and distribution
- coordinate operation among MCE cards
- Clock Card firmware
- Clock Card commands
- Block diagram [PDF] (obsolete)
- Clock Card Rev B5 to Rev B6 changes
- Clock Card Rev B to Rev C changes
- Fiber Communicaiton Protocol
