Note 7:
The “activate” bit for Serial Port 2 (CIrCC) is reset by VTR POR only. The V
CC
power-up
default for this pin is Logic “1”.
Do not use this pin for infrared transceivers that are
transmit active high.
Buffer Type Descriptions
I
IS
IOD16
IO24
IO4
O4
O24
OD24
ICLK
IO12
O12
OD12
O24PD
Input, TTL compatible.
Input with Schmitt trigger.
Input/Open Drain Output, 16mA sink.
Input/Output, 24mA sink, 12mA source.
Input/Output, 4mA sink, 2mA source.
Output, 4mA sink, 2mA source.
Output, 24mA sink, 12mA source.
Output, Open Drain, 24mA sink.
Clock Input
Input/Output, 12mA sink, 6mA source
Output, 12mA sink, 6mA source
Output, Open Drain, 12 mA sink
Output, 12mA sink, 6mA source with 30
µA
pull-down
9
SMSC [ SMSC CORPORATION ]
