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UPD6708 数据表(PDF) 50 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) 50 Page - NEC

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µPD6708
8.3
Processing Routine
8.3.1
µPD6708 initialization routine
• INIT command setting flow
Start
Drive the host controller port which controls the
PD6708
RESET pin low for 6
s or longer, then return it to high.
(Not necessary when a hardware reset such as a power-on
reset is executed.)
Reset
PD6708
µ
CMR
← 00H
INIT command
setting
Normal end
µ
Place 00H in the command register.
Release reset mode.
Set unit address slave unit condition with INIT command.
µ
Start
Read STR
WDB empty?
Write to WDB
Write to WDB
Write to CMR
Normal end
EXIT
N
Y
Unit Address Setting
(Higher 8 Bits)
Unit Address (Lower 4 Bits)
Slave Unit Condition Setting
Set command code (0H).



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