Mitsubishi Motors DS5000TK - Manual (Page 147)

USER’S GUIDE
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DS1215 REGISTER ENTRY FLOWCHART Figure 17–3
Set ECE2 bit in the MCON
register to a logic 1
Perform a dummy read
operation to reset clock pattern
recognition circuit*
To open clock, write the 64–bit
serial pattern by using A2 and
A0 embedded address lines
Are clock time
registers to be
read/written?
Read time registers one bit at
a time using read MOVX
instructions that set A2 to
logic 1. Bit to be read will
be returned in bit 7 of data
byte.
Clear ECE2 to a zero to
access normal embedded
data memory map
* To guarantee that the pattern recognition circuit is
reset to the first bit of the sequence it is highly rec-
ommended that 65 read operations be performed.
This is in case the DS5000T has been interrupted
or reset while the clock was open.
Write to time registers one bit
at a time using write MOVX
instructions that clear A2 to a
logic 0. A0 should be the bit
to be written.
Read
Written