APEIPCI Express Analog Power. PCI Express analog power used by the PLL and bias
generator.
V
SS
IGround.
V
TT
PEPCI Express Serial Data Transmit Termination Voltage. This pin allows the driver
termination voltage to be set, enabling the system designer to control the Common
Mode Voltage and output voltage swing of the corresponding PCI Serial Data Transmit
differential pair.
SignalTypeName/Description
Table 7 Power and Ground Pins
11 of 37October 3, 2011
IDT 89HPES22H16 Data Sheet
Pin Characteristics
Note:Some input pads of the PES22H16 do not contain internal pull-ups or pull-downs. Unused inputs should be tied off to appropriate
levels. This is especially critical for unused control signal inputs which, if left floating, could adversely affect operation. Also, any input pin left
floating can cause a slight increase in power consumption.