User Guide

Hardware and Software Design • Manufacturing Services
P a g e 19
BIS2_PARDAT
[$10] BiSerial II Parallel Data Output Register read/write
CONTROL UART
DATA BIT DESCRIPTION
31-8 Spare
7-0 parallel output data
FIGURE 9 PMC BISERIAL-II PARALLEL OUTPUT DATA BIT MAP
There are 8 potential output bits in the parallel port. The Direction and
Termination register sets the direction of the bits. When the direction is set to
output the bit definitions from this register are driven onto the corresponding
parallel port lines.
This port is direct read-write of the register. The IO side is read-back from the
Status1 port also the lowest 8 bits. It is possible that the output data does not
match the IO data in the case of the Direction bits being set to input.