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UPD6708 数据表(PDF) 59 Page - NEC

部件名 UPD6708
功能描述  IEBusa Inter Equipment Busa PROTOCOL CONTROL LSI
PDF  72 Pages
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制造商  NEC [NEC]
网页  http://www.nec.com/
标志 NEC - NEC

UPD6708 数据表(HTML) 59 Page - NEC

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µPD6708
8.3.5
Master reception processing routine
This processing routine is used when the master unit receive data, slave status and lock address after execution of the
MREQ1 or MREQ2 command.
One of four different routines is executed depending on the contents of the return code.
(1)
Processing in case of master reception start return code (4H)
Start
Mre
← 1
Read RDB
Read RDB
Read RDB
Normal end
Read slave address (higher 8 bits).
Read slave address (lower 4 bits)
and control bits.
Read number of master receive data bytes.
N3
Number of master
receive data bytes
Set master reception flag (Mre).



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