Toshiba – Toshiba TMP87CP24AF User Manual
Page 90
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TOSHIBA
TMP87CM24A/P24A
If
it
is
necessary
to
change
the
number
of
words
in
internal
clock,
during
automatic-wait
operation
which
occurs
after
completion
of
transmit/receive
operation,
BUF
must
be
rewritten
before
reading
and writing of the receive/transmitdata.
Note:
The buffer contents are lost when the transfer mode is switched. If it should become
necessary to switch the transfer mode, end receiving by clearing SIOS to "0", read the last
data and then switch the transfer mode.
Clear SIOS
SIOS
SlOF
SEF
SCK pin output
50 pin
51 pin
INTSIO interrupt
DBR
Write (a)
XIX
T1
X
Read out (c) Write (b)
Read out (d)
Figure 2-41. Transmit/Receive Mode (Example :
8
-bit, Iword, internal clock)
SCK pin
SlOF
SO pin
Bite
X
Bit?
tsODH
tsoDH = min 4/fc [s] (In the NORMAL1/2, IDLE1/2 modes)
= min 4/fs [s] (In the SLOW, SLEEPmodes)
Figure 2-42. Transmitted Data Hold Time at End of Transmit/Receive
3
-
24-90
2002
-
10-03