STFLWARP11PG datasheet(7/19 Pages) STMICROELECTRONICS

部件名	STFLWARP11PG

功能描述	WEIGHT ASSOCIATIVE RULE PROCESSOR

Download	19 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

7 / 19 page

provided by W.A.R.P. by means of A0-A9 and

EPA0-EPA2 output pins.

Data must be loaded 8 bit a time in the data bus

and can be read from an external non volatile

memory or loaded by an host processor.

ON-LINE MODE

In On-line mode W.A.R.P. is enabled to elaborate

input values and calculate outputs according to the

fuzzy rules stored into the microprogram. W.A.R.P.

reads the input values one a time in the input data

bus when all the inputs are given, a NP signal is

pulled high to indicate that the computation is start-

ing. The computational phase is divided in two main

parts. During the first one the input values are read

and the corresponding ALPHA values (activation

levels) are extracted from the internal memories. In

the second part the computation of the fuzzy rules

and the defuzzification are implemented.

The block diagram shown in figure 3 describes the

structure of W.A.R.P..

Antecedent Memory. It is formed by 4 benchs

each one containing one to four fuzzy sets bonded

to the input variables.

Consequent Memory. It is formed by one bench

where the fuzzy sets bondedto the output variables

are stored .

Program Memory. It is formed by a single bench.

Each line contains an operating code to execute

the computation of a rule. This code selects the

antecedentweights (ALPHA) involved in a rule, and

connects them by the programmed connective op-

erators (AND,OR).

Input Router. This internal block performs the

input data routing. Data are read one byte a time

from the input data bus, stored in 4 different buffers

and, thanks to a pipeline process, sent together to

4 indipendent modules to be processed in parallel

according to the chosen set-up configuration. Input

data resolution is decided by the user (MAX 128

points) according to the available configurations,

as shown in table 5.

The cycle starts when a positive pulse is applied at

FIN for a time no lower than an entire clock period

and continues until a new FIN (after NP low) or a

PRST signal is given.

Fuzzifier. This block generates the addresses of

the antecedentmemories where the ALPHA values

for each sampled input value are stored. It reads

the first four input values and calculates the corre-

sponding antecedent memories addresses. After-

wards it reads other four inputs values and

simultaneously sends, thanks to a pipeline proc-

ess, the previous four ALPHA values into internal

registers. These ALPHAvalues are then sent to the

Inference Unit. W.A.R.P. stores all ALPHA values

comprising a term set, which is formed by the MFs

connected to the IF-part of a rule, in successive

memory locations of the same memory word (see

figure 4). The vectors characterizing the MFs of a

term set are stored so that the ALPHAs of different

MFs corresponding to the same universe of dis-

course point (for the same input) are stored se-

quentially. So W.A.R.P. retrieves all the alpha

values of a term set using the crisp input value to

calculate the memory word address in the used

fuzzy memory device.The Fuzzifier Unit is driven

Figure 5. Antecedent Memory Organization

7/19

W.A.R.P.1.1

类似零件编号 - STFLWARP11PG

制造商	部件名	数据表	功能描述
STMicroelectronics	STFLWARP11PG-PL	89Kb / 4P	ADAPTIVE FUZZY MODELLER

More results

类似说明 - STFLWARP11PG

制造商	部件名	数据表	功能描述
Xilinx, Inc	PK135	74Kb / 2P	Average Weight: 11.2g
	PK232	150Kb / 2P	Average Weight: 0.2450g
	PK233	241Kb / 3P	Average Weight: 0.232g
	PK397	242Kb / 3P	Average Weight: 11.0927g
	PK672	55Kb / 3P	Average Weight: 2.154g
	PK666	72Kb / 3P	Average Weight: 2.000g
	PK520	104Kb / 2P	Average Weight: 0.7690g
	PK558	68Kb / 3P	Average Weight: 24.9750g
	PK222	260Kb / 1P	Average Weight :5.633g
	PK226	257Kb / 1P	Average Weight :9.7816g