M306V5ME-XXXSP Datasheet, PDF (103/262 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) Polarity select function
As shown in Figure 2.11.18, the CLK polarity select bit (bit 6 at addresses 03A416, 037C16) allows
selection of the polarity of the transfer clock.
• When CLK polarity select bit = “0”
CLKi
TXDi
D0 D1 D2 D3 D4 D5 D6 D7
RXDi
D0 D1 D2 D3 D4 D5 D6 D7
• When CLK polarity select bit = “1”
CLKi
TXDi
D0 D1 D2 D3 D4 D5 D6 D7
Note 1: The CLK pin level when not
transferring data is “H”.
Note 2: The CLK pin level when not
transferring data is “L”.
Figure 2.11.18 Polarity of transfer clock
(2) LSB first/MSB first select function
As shown in Figure 2.11.19, when the transfer format select bit (bit 7 at addresses 03A416, 037C16) =
“0”, the transfer format is “LSB first”; when the bit = “1”, the transfer format is “MSB first”.
• When transfer format select bit = “0”
CLKi
TXDi
D0 D1 D2 D3 D4 D5 D6 D7
RXDi
D0 D1 D2 D3 D4 D5 D6 D7
LSB first
• When transfer format select bit = “1”
CLKi
TXDi
RXDi
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
MSB first
Note: This applies when the CLK polarity select bit = “0”.
Figure 2.11.19 Transfer format
Rev. 1.0
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