M306V5ME-XXXSP Datasheet, PDF (116/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306V5ME-XXXSP
M306V5EESP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
(1) Function for outputting a parity error signal
With the error signal output enable bit (bit 7 of address 037D16) assigned “1”, you can output an “L”
level from the TxD2 pin when a parity error is detected. In step with this function, the generation timing
of a transmission completion interrupt changes to the detection timing of a parity error signal. Figure
2.11.28 shows the output timing of the parity error signal.
• LSB first
Transfer “H”
clock “L”
RxD2 “H”
“L”
TxD2 “H”
“L”
Receive “1”
complete flag “0”
ST D0 D1 D2 D3 D4 D5 D6 D7 P SP
Hi-Z
Figure 2.11.28 Output timing of the parity error signal
ST : Start bit
P : Even Parity
SP : Stop bit
(2) Direct format/inverse format
Connecting the SIM card allows you to switch between direct format and inverse format. If you choose
the direct format, D0 data is output from TxD2. If you choose the inverse format, D7 data is inverted
and output from TxD2.
Figure 2.11.29 shows the SIM interface format.
Transfer
clcck
TxD2
(direct)
TxD2
(inverse)
Figure 2.11.29 SIM interface format
D0 D1 D2 D3 D4 D5 D6 D7 P
D7 D6 D5 D4 D3 D2 D1 D0 P
P : Even parity
Figure 2.11.30 shows the example of connecting the SIM interface. Connect TxD2 and RxD2 and apply
pull-up.
Microcomputer
TxD2
RxD2
SIM card
Figure 2.11.30 Connecting the SIM interface
116
Rev. 1.0