COM20051 Datasheet, PDF (54/82 Pages) List of Unclassifed Manufacturers – Integrated Microcontroller and ARCNET (ANSI 878.1) Interface

START
D
INIT NODE ID TO FEh
SET RECON COUNT
TO ZERO
WAIT 52µS FOR THE
CORE TO USE NEW ID
ISSUE CLEAR FLAGS
COMMAND
READ DIAGNOSTIC
STATUS REGISTER
WAIT 82.2µS MIN. FOR
RCVACT
INC. RECON COUNT
N
IS RECON
COUNT = 3?
Y
CLEAR THE
DIAGNOSTIC STATUS
REGISTER
INITIALIZE THE 840 mS
TIMER
IS RCVACT &
Y
TOKEN RESET?
DEC NODE ID
N
IS RCVACT &
TOKEN SET?
Y
Y
IS DUPID SET?
N
DID THE 840mS ^N
TIMER EXPIRE?
C
Y
IS THE RECON ^N
A
BIT SET?
Y
Y
IS DUPID SET?
N
IS
Y
MYRECON
SET?
N
DID THE 840mS ^N
TIMER EXPIRE?
Y
N HAS A TOKEN
BEEN SEEN?
Y
B
FIGURE 16 – DUPLICATE ID DETECTION ALGORITHM
54