GX3146 Datasheet, PDF (42/46 Pages) Semtech Corporation – Crosspoint Switch with Trace Equalization and Output De-emphasis

5.2.3 VCC_IN1, VCC_IN2 Supplies
The controls for the equalizers are serialized, and hence power switching of the
equalizers in mission mode is staggered in time. Assertion of reset will however lead to
more nearly synchronous shedding of load. The typical current drawn from the
VCC_IN1 and VCC_IN2 supplies is 0.85A each, and this can be shed in 1ns, including the
reset signal propagation delay.
Table 5-1: Summary
Supply
Maximum
Current (A)
VCC_25_A
VCC_OUT1
VCC_OUT2
VCC_IN1
VCC_IN2
9.5
2.06
2.06
0.85(typ)
0.85(typ)
Maximum Positive dI/dt
0.41GA/s
0.22GA/s
0.28GA/s
<0.1GA/s
<0.1GA/s
Maximum Negative dI/dt
(reset/simultaneous
power-down)
-1.1GA/s
-0.8GA/s
-1.8GA/s
-0.9GA/s
-0.9GA/s
GX3146 146 x 146 3.5Gb/s Crosspoint
Final Data Sheet Rev. 2
GENDOC-056075 March 2013
www.semtech.com
42 of 46
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