Pin Assignments—IP2022 User’s Manual 378 www.ubicom.com B.1 Signal Descriptions I = Digital Input, AI = Analog Input, O/DO = Digital Output, HiZ =
High Impedance, P = Power, PLP = On-Chip Pullup, ST = Schmitt
Trigger Table B-1  Signal Descriptions Name Pin Type    Sink
@ 3.3V
IOVDD Source
@ 3.3V IOVDD Description AVDD 70 P Analog Supply AVSS 71 P Analog Ground DVDD  9, 31,
56, 72 P Logic Supply DVSS 10,32, 55, 73 P Logic Ground GVDD 65 P I/O Port G supply IOVDD    12,34, 53 P I/O Supply (except Port G) IOVSS 11, 33, 54 P I/O Ground (all ports) XVDD 76 P PLL Supply XVSS 77 P PLL Ground OSC1 78 I Clock/Crystal/Resonator
Input OSC2 79 O Crystal/Resonator Output RST 80 I/ST/PLP Reset Input RTCLK1 74 I Real-Time Clock/Crystal
Input