Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Data Sheet
Product codes
ATSAM4L-XSTK
960
42023E–SAM–07/2013
ATSAM4L8/L4/L2
36. Glue Logic Controller (GLOC)
Rev: 1.0.2.0
36.1
Features
•
Glue logic for general purpose PCB design
•
Programmable lookup table
•
Up to four inputs supported per lookup table
•
Optional filtering of output
36.2
Overview
The Glue Logic Controller (GLOC) contains programmable logic which can be connected to the
device pins. This allows the user to eliminate logic gates for simple glue logic functions on the
PCB.
device pins. This allows the user to eliminate logic gates for simple glue logic functions on the
PCB.
The GLOC consists of a number of lookup table (LUT) units. Each LUT can generate an output
as a user programmable logic expression with four inputs. Inputs can be individually masked.
as a user programmable logic expression with four inputs. Inputs can be individually masked.
The output can be combinatorially generated from the inputs, or filtered to remove spikes.
36.3
Block Diagram
Figure 36-1. GLOC Block Diagram
P
E
R
IPH
ER
AL
B
U
S
TRUTH
FILTER
OUT[0]
...
OUT[n]
FILTEN
IN[3:0]
…
IN[(4n+3):4n]
…
IN[(4n+3):4n]
AEN
CLK_GLOC
GCLK