Download PLSyn User's Guide

Transcript
8-4
MACH 1-4 Device-Specific Fitting
MACH 215, MACH 4xx These devices have one OE
PTERM per output. You can program them independently as 1,
0, or any product of signals in the block.
Register Reset/Preset Functions
MACH 1xx, MACH 2xx These devices have one reset
and one preset in each block. The reset and preset apply to all
registers in the block.
Note
Note, a registered function without a reset (or
preset) is the same as RESET_BY 0. This will not
fit in the same block with other functions with nonzero reset expressions.
MACH 215 This device has a reset and preset PTERM for
each output register. The input registers do not have reset
capabilities.
MACH 4xx These devices have one reset and one preset in
each block. These apply to the macrocells but not to the input
registers. The macrocells have an asynchronous option which
allows for a local reset or preset, but not both, for individual
functions.
Packaging
All like pin-count packages are pin compatible. For example,
when a MACH 110 design exceeds the capacity of the device,
you can generally substitute a MACH 210.