M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
8.5.1 Serial I/O Common Transmission/Recep-
tion mode
By writing “1” to bit 6 of the serial I/O mode register, signals SIN and
SOUT are switched internally to be able to transmit or receive the
serial data.
Figure 8.5.4 shows signals on serial I/O common transmission/re-
ception mode.
Note: When receiving the serial data after writing “FF16” to the serial I/O regis-
ter.
S
CLK
OUT
Clock
S
“1”
Serial I/O shift register (8)
SIN
“0”
SM6
SM : Serial I/O mode register
Fig. 8.5.4 Signals on Serial I/O Common Transmission/Reception Mode
Rev.1.00 Oct 01, 2002 page 30 of 110
REJ03B0134-0100Z