Lesson 1 – Analog Clock Domain Description
372
Clock Distribution 1024 Testhead (no AMC, Digital Domain only)
In the figure above, the clock board in card cage 5 generates the
clock signal (master). The signal is distributed via Ring A and Ring
B to all other clock boards (slaves).
Note: Although named Ring, the signal lines A and B are not
closed loops.
Master
RING A
RING B
Ring
Ext.
C. Cage 5
NC
SLOTS
Slave
RING A
RING B
Ring
Ext.
C. Cage 3
NC
SLOTS
Slave
RING A
RING B
Ring
Ext.
C. Cage 8
SLOTS
Slave
RING A
RING B
Ring
Ext.
C. Cage 2
SLOTS
NC
RingRing
Ring
Slave
RING A
RING B
Ring
Ext.
C. Cage 1
NC
SLOTS
Slave
RING A
RING B
Ring
Ext.
C. Cage 7
NC
NC
SLOTS
Slave
RING A
RING B
Ring
Ext.
C. Cage 4
SLOTS
Slave
RING A
RING B
Ring
Ext.
C. Cage 6
SLOTS
RingRing
Ring
NC
NC
NC
Ring
NC
Local PLL
NC NC
NC
NC
NC
Not Connected
Local PLL
Ring
Clock generated by PLL
Clock forwarded from the
previous clock board
Analog Card Cage Analog Card Cage
Analog Card Cage Analog Card Cage