Table 6-25. Power and Ground pins (Sheet 2 of 2)
Signal Name
I/O Type
Description
vtth_serdes
Input
SERDES Host driver termination voltage (C/D
Variable depending on the application)
vtth_serdes (V)
VSW (ac, mV)
1.0
1.2
1.5
1.8
250
350
500
750
Provides a method for varying the voltage swing on the
Host side SERDES differential ouputs. 1V p-p differential
signaling is common, vttn_serdes is normally tied to 1.5 V.
vdda_serdes
vssa_ddr_pll
vdda_ddr_pll
vdda_pll
Power
Ground
Power
Power
Ground
1.0V SERDES Analog Power
De-skew PLL Analog Ground Supply
De-skew PLL Analog Power Supply
1.0V PLL Analog Power supply
PLL Analog ground
vssa_pll
4450 – Data Sheet, DS-0131-06
Page63
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