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COM20051 Datasheet(PDF) 61 Page - List of Unclassifed Manufacturers

Part # COM20051
Description  Integrated Microcontroller and ARCNET (ANSI 878.1) Interface
PDF  82 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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COM20051 Datasheet(HTML) 61 Page - List of Unclassifed Manufacturers

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FIGURE 18 – RECEIVE INTERRUPT SERVICE ROUTINE (continued)
N
N
N
Y
Y
Y
RAM BUFFER
1 FREE?
RAM BUFFER
2 FREE?
RAM BUFFER
3 FREE?
SET BIT 0
IN RAM_BUF
SET BIT 1
IN RAM_BUF
SET BIT 2
IN RAM_BUF
SET BIT 3
IN RAM_BUF
SET DPTR
TO START OF
BUF_4
MAX RX_PAGE
REACHED?
SET RX_PAGE =
CURRENT
RX_PAGE
Y
N
SET RX_PAGE =
MIN_RX_PAGE
ALL
EXTERNAL
BUFFERS
FULL?
Y
N
ISSUE ENABLE
TO RECEIVE
COMMAND
CLEAR
INT
EXIT
SET DPTR TO
START OF
BUF_1
SET DPTR TO
START OF
BUF_2
SET DPTR TO
START OF
BUF_3
COPY PACKET
TO EXTERNAL RAM
EXT.
EXT.
EXT.
A



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