COM20051 Datasheet, PDF (63/82 Pages) List of Unclassifed Manufacturers – Integrated Microcontroller and ARCNET (ANSI 878.1) Interface

3
BIT 0 OF
Y
TX_PEND
SET?
N
BIT 4 OF
TX_PEND
SET?
Y
*CCHEN CHECK TO
BE IMPLEMENTED
N
Y
BITS 5&6
SET?
N
EXIT
SET OFFSET =
#013H
CALL
SEND_TX_CMD
CLEAR BIT 0 OF
TX_PEND
Y
BIT 4 OF
TX_PEND
SET?
N
EXIT
BIT 1 OF
Y
TX_PEND
SET?
N
SAME PROCEDURE AS
FOR BIT 0 BUT WITH
OFFSET = 33H
BIT 2 OF
Y
TX_PEND
SET?
N
SAME PROCEDURE AS
FOR BIT 0 BUT WITH
OFFSET = 1BH
BIT 3 OF
Y
TX_PEND
SET?
N
SAME PROCEDURE AS
FOR BIT 0 BUT WITH
OFFSET = 3BH
EXIT
FIGURE 19 – TRANSMIT INTERRUPT SERVICE ROUTINE (continued)
63